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SF Engage Jacket


Rated 4.94 out of 5 based on 36 customers 36 reviews
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A superior synthetic insulated jacket developed for high performance activities.


The SF Engage is an indispensable and extremely versatile synthetic jacket. Designed for a multitude of high performance activities and shifting weather conditions.  Utilising 133gram Primaloft®️ Gold Active+ for a high warmth to weight ratio.  Lightweight rip-stop DWR treated Pertex®️ Quantum delivers water resistance whilst maintaining breathability.  Take up arms with the elements, wage war against inclement weather – Prepare to Engage!


  • Primaloft Gold Active® + 133gram Synthetic Insulation
  • Pertex® Quantum Diamond Fused Outer Fabric
  • ThruDark Heritage Camo Line
  • 2 internal mesh stash pockets for multiple storage options.
  • 2 YKK® zip hand warmer pockets
  • ThruDark Insignia patches compatible
  • Weight of this garment is 630 grams (approx) this was based on a size Large


Please refer to fabric care instructions for particular garment care. If you should have any further queries about the care of your garment please send us an email to [email protected]

Find out about the latest ThruDark product developments here




4-way stretch

4-way stretch

Water Repellent

Water Repellent



Thermo Regen

Thermo Regen





4-way stretch

4-way stretch

Water Repellent

Water Repellent



Thermo Regen

Thermo Regen



and fabrics

Cut from a different cloth



Primaloft Gold Active +

PrimaLoft Gold Insulation Active+ has been designed to regulate climate comfort, especially during intense sporting activities - Breathable: Encourages the passage of air and moisture to keep you from feeling cold and clammy.

Learn More



ULTRA THIN WATER RESISTANT COATING TO PROVIDE INCREASED WEATHER RESISTANCE FOR EXTREME CONDITIONS. By combining a tightly woven face fabric with a microporous coating, Pertex® Quantum Pro delivers a very high level of water resistance whilst remaining lightweight, soft and breathable. The increased weather resistance and durable construction means these fabrics are ideal for use in cold or damp environments where keeping warm and dry is crucial. – Highly water resistant – Durable construction – Maximises the thermal efficiency of insulation




Louis : Height : 178cm Weight: 83kg Chest: 42" Waist 31" 31" - Wears size Large

Staz: Height : 173cm Weight: 76kg Chest: 38" Waist 28" 30" - Wears size Small

Dylan Hartley : Height: 185cm Weight: 110kg Chest: 48" Waist: 38" 32" Wears size XXL

Foxy : Height: 188cm Weight: 100kg Chest: 44" Waist: 34" 34" Wears size L/XL

Matt : Height: 188cm Weight: 90kg Chest: 46" Waist: 34" 36" Wears size XL

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Product reviews

Customer reviews and ratings

  1. Matthew Whittington

    Having already bought quite a few of the thrudark range I received the Engage yesterday, I’ve already taken it out for long trek – firstly impressions are its comfortable, lightweight, can easily be rolled up into a pack, build quality is excellent, definitely a warm coat. As for water protection – it literally just rolls off!

    Size wise I’m 188cm, about 92kgs 43 chest – the XL fits perfect with enough room for the phalanx fleece underneath as a base layer.

  2. Chris Pusey

    Best bit of kit I’ve owned. Cracking. Great fit and built like a tank.

  3. Lee Boulton

    Can’t recommend enough.

    Just took delivery of my black XXL SF Engage jacket.
    After unpacking and admiring myself for half an hour in the mirror I went straight out for my daily exercise walk in it. With a few miles on the clock I can honestly say I love it! Its so light weight for such a great peace of kit. Rain was no problem and I felt warm the whole walk despite the cold wet weather. Honestly I felt like the cats pyjamas the whole walk. I love this brand they just keep exceeding my expectations – and they are already set them high for me.


  4. Scott

    Bought this after the getting the raid as a warm jacket and genuinely it’s such a good piece of kit! I’ve had RAB puffers before for warmth and it goes over and above them while letting you actually breath and being a big sweaty gadge it’s perfect! I’m 190cm and 105kg’s and XL fits me!

  5. Simon Evans

    I received my black obsidian XL engage jacket a couple of days back and took her out for a decent trek today in the very cold wind & sunshine. It is incredibly lightweight and warm and looks the boll*cks!I absolutely love it. Once again Thrudark have smashed it. Well in lads! Added another beaut to my ever growing collection.

  6. Paul G

    Yet again on point, got the full range now apart from the parka. The wife thinks I have an addiction lol.
    Keep it up team you never fail to impress!

  7. Matt M

    Wow..epic kit. Light enough to pack away, but thermonuclear warmth. Looks the nuts, without being standout, so perfect for work too. 5’9 and 42” chest…fit is like tailor-made. You lads smashed it out the park again. Just gotta start saving for the Grunt when it returns!

  8. Martin P

    I have had a few insulated jackets over the years but this one stands out, used it on some local walks around the nature reserve and found it very warm. Design and build quality is second to none. Fingers crossed I will be taking this with when I head to the Lakes in April. Cracking jacket lads!!!

  9. Paul Oleandi

    Went ahead and pulled the trigger on this. Came lightning fast as the rest of my TD orders across the globe in to the US. Fit is spot on and the performance is rather unparalleled to any other model jacket of similar caliber I’ve owned. I mean it’s literally the best I’ve owned for the category. I’ve tried tons of other brands through various disciplines outdoors in a wide range of temperature. Purchase and never look back!

  10. D Burnell

    Absolute fire! Quality and finish is exceptional and you can see this kit was designed by the very best.

    You aren’t buying a jacket, you’re buying a way of life. Endeavour through adversity.

  11. Michael Manning

    Worn out in the snow this weekend. Kept me bone dry and warm. Love the peaked hood. Build quality feels excellent and looks good whether i am on a hike or wearing around town.

    Size wise i probably could do with a XXL but prefer the more fitted look. Am 6’3” and 114kg.

    Its my second coat now from Thrudark. Love the brand and what it stands for.

  12. Andrew Crawford

    What can I say about these guys. This is my second purchase from ThruDark, the first was the SF Phalanx Fleece which is a quality bit of kit and I recently bought the SF Engage jacket which upon opening and trying on I was very pleased and I soon put it to the test last weekend especially with the inclement weather knocking around in my area. Why did I buy this jacket? Well I did have the M.E Lightline jacket which I bought back in 2017 and it was really good, however this winter (20/21) I saw too many blokes wearing the same jacket, there were 3 guys in the office on the same day I was in so I had to get rid of it ASAP. 👎🏻

    I saw the email for the for the SF Engage Jacket and i was immediately impressed by it looks, ThruDark are not a bunch of chipshop blokes, in-fact there’re badass former Tier 1 operators who know a thing or two about yomping in a field (Elan Valley / Black Mountain / Dartmoor 🤮)

    Anyway I highly recommend their products and the detail and quality is pretty impressive. The only comment I have is I found the sleeves a little loose however it wasn’t a major drama especially if you have a base layer on.

    Keep it coming gents. 👍🏻

  13. Marc

    This jacket is absolute FIRE! Ultra lightweight, fits perfectly, mega warm, practical/secure storage and looks outstanding.

    Goes without saying it arrived rapidly and with the same attention to detail we have come to expect from the Thrudark lads.

    I would highly recommend this jacket, it’s been my second skin since receiving. Loved it so much I also got one for my Wife and she’s not been out of it either.

    Amazing kit, amazing brand.

  14. Jamie Smith

    SF Engage, in Olive Green, XXL.

    Arrived yesterday 26.01.202, waiting for me when I got home after shift. From N.Q.G. socks right through to ThruDark jackets I now own, the common denominators are as follow; professionally constructed, developed and tested, by highly trained persons, in extreme REAL conditions. No Bull shit hype involve! Every item I’ve got in its own category, looks the absolute dogs b******s to boot.
    To the SF Engage, truly excellent. Warm, robust, but light. Non-restrictive, last you into spring, on those undecided days of cool but not freezing, but wont cook you, if it warms a little. Packs away, into a small or day back pack if require(In House Trial Run). Great colour, my other jackets are black, so I went for Olive green. feels great on, XXL, Im 107-110kgs & 6’1″ tall 36-38″ waist. Fits perfectly. Anyone who has bought from ThruDark understands what Im saying, anyone thinking of buying, do it, 100% no disappointment guaranteed, you’ll not bother with other brands, Top tier kit is a given.
    Finally, to ThruDark, keep that Gucci Kit coming!, worth the wait, worth every penny, Best of the Best gents! 🖤🏆⭐⭐⭐⭐⭐⭐🗻🥇🎯

  15. Kevin Wheeler

    Just received my Crimson Red SF Engage jacket today. I’ve purchased Thrudark kit before so I already knew it would be awesome, but this has yet again gone to a new level.

    Absolutely outstanding quality, feel and fit. I’m 6ft and 95kgs and XL is a perfect fit. Nicely fitted but with room to manoeuvre.

    Would 100% recommend.

  16. Andrew B

    Received the SF Engage today.

    I’m 6ft dead and currently around 106Kg. 42/43″ chest. 36″ waist.

    I was undecided between large and XL and after emailing Customer Services, they recommended XL. TBH, I could probably get into a large, but happy with the XL. It doesn’t look overly big and the large may have been a little tight with the added lockdown weight!

    First purchase from ThruDark. I usually wear Arc’teryx as my outdoor brand, and usually buy everything in black, as it doubles up as my gym / boxing coaching wear.

    This time I wanted a different colour, so went with the green, which I’m very happy with.

    The jacket itself is well made. Feels premium. Fits well. It’s REALLY warm; I mean I run hot anyway, but damn this is warm!

    What I like about the jacket is the styling and the fact the brand is premium but less well known than brands such as Arc’teryx, which have become “fashion” brands these days.

    It’s a really nice jacket and I know will become my “go-to” when weather is very cold.

    My only constructive critism (and bear in mind this is my opinion, others may very well disagree), is that the elasticatede cuffs could be tighter. The arms are long which is good. I don’t have skinny wirsts by any means, but personally I like the cuffs to be very tighht, especially as they tend to get looser over time. It’s a minor point and as I say, other will no doubt prefer the way they are designed now.

    And BTW, I couldn’t find anywhere on their site, but it has a drawcord hem, which is a deal breaker for me, so very pleased when it arrived and had them.

    Will defo buy again and the misses wants the same jacket for herself, so obviosuly appeals to women:)

  17. Neil Meager

    Been eyeing up a new Synthetic warmers jacket for a while, love everything about the Engage, I went for the crimson Red and it’s stunning, fit is fantastic, worn a few times now and having had a lot of snow and rain in Scotland it’s never failed once, if you are considering buying go for it you will not be disappointed. My only regret is not buying sooner, thanks again Thrudark, amazing service as always, keep leading the way lads.

  18. Jimmy Jones

    4th bit of gear purchased really cannot fault it I’m usually between large and medium went for the M so I could get get a way with thin t shirt and works perfect love the colour also
    5’8 77kg

  19. Danny Saxby

    I was looking for a lightweight , water repellent jacket for everyday use, perfect fit looks immense too , I was absolutely buzzing when this came up does exactly what it says on the tin, another amazing bit of kit to add to my ever growing collection, can’t wait to see what else this brand has in store 10/10 again well done lads..

  20. Calvin

    I had this delivered last week (early birthday present) and my word the attention to detail is second to non! Had some kit over the years in my time in the forces but this tops the tree by a long way. Would highly recommend any of the Thrudark dark. Will be ordering more soon! Thanks

  21. chrisharringtonc

    My SF Engage arrived this morning, As usual, premiership piece of clothing. The only comment I could make is to ask the lads to have a break, as my wardrobe really doesn’t need a fourth cold weather coat, and I’m on first names terms with the DPD driver!!

  22. Jamie dainton

    Already learned that you don’t need anything more than a t shirt under this coat unless you want to overheat, for a lightweight jacket the warmth it generates is unbelievable. Worn it on 4 different half marathon power walks now in minus temps, high winds & driving rain & the only issue has been getting to hot. Really something special happening with this brand everything about it has me hooked from my td socks, cap, hoodie, tees & leggings

  23. danjhill29

    I’ve bought a few things from Thrudark in the past and honestly this is the best outdoor jacket I’ve owned. Everything on it is quality and well thought out. Performed perfectly out on the North East Coast with minus 10 windchill blasting in off the North Sea. Buy nice or pay twice!

  24. Rich H

    The SF Engage was delivered today, not disappointed at all. A proper quality piece of kit, looking forward to testing this one in the hills. Very pleased, already found myself back on the website looking at other kit…

  25. James pedler

    This is my first piece of thrudark kit and i must say I am well impressed by the quality of this jacket,I’ve been through or own most of the big outdoor brands Arc’teryx,Rab,patagonia ect and this has gone straight to the top of my go to list when the cold comes in,it looks great but more importantly performs very well,as a personal preference a couple of things could have made this jacket a bit better with the addition of a 2 way zipper and maybe a stuff sack,but overall very impressed so much so I ordered the sf phalanx fleece after receiving this jacket.

  26. Kyle Edwards

    Epic jacket. I’ve purchased lots of garments from TD and this jacket is my favourite. With just a tshirt underneath I’ve been good down to -2. Rain just runs of it. Can’t recommend it enough. You get what you pay for.

  27. Joe Mc Ginley

    My general rule of thumb is that if I look at any product 3 or more times then I tend to buy it.
    The exception is the ThruDark range. I just buy when I can.
    The quality, service and passion that goes into these products cannot be beaten. Keep up the great work.

  28. Lee

    Another quality jacket from Thrudark.Thanks Lads.

  29. James Billingham

    TESTED… after purchasing the jacket and a planned trek to the lakes i thought this would a be perfect testing ground! Intermittent showers and 40mph+ winds forecast this was Engage territory. Well in-fact the intermittent showers turned in to 6/7hours of solid torrential rain above 600m including snow and sleet. I reached the Engage’s limit of water resistance but it didn’t give up with only the base layer underneath i still stayed warm. This jacket is a great piece of kit and will never back down against the elements. The hood wraps perfectly and the peak is a winner against rain fall. Chest pockets inside and out are easy to access and plentiful in space for loading up. All in all buy this damn jacket! You will not be disappointed.. Thrudark Thruout!

  30. Linda

    Got this for my other half. As everyone has said the quality is top notch.
    He’s a 42/43chest 1.79m and 13st so the large fitted him perfectly.
    He hasn’t tried it out yet because its the middle of the summer but I’m sure it will keep him warm on his travels.

  31. Andrew Bull

    Previously used Canada Goose and Montane jackets. This is every bit as warm and has some nice touches like the hard wearing material on the cuffs. Overall really nice jacket

  32. Rob

    Received the Jacket about a week ago and the quality is fantastic. Tried it on and fits me perfectly (6’1 14 stone XL) and it looks very good. Looking forward to trying this out to ensure it does what it says on the website and will be buying more from these asap. Well done Thrudark!

  33. Howard

    Absolutely awesome jacket!

    Having purchased the Breach Jacket from TD and knowing just how good that jacket is, I was keen to compare the two as I was after another winter layer as an option and what an option the Engage Jacket is…

    If feels like a streamlined version of the Breach Jacket whilst offering a genuine standalone option… I’m really chuffed with it and like my other TD kit it will see its share of inclement weather…

    As always, design cues are spot on with that subtle nod to UKSF without feeling like you’re wearing a military jacket – those that know – know I guess…

    I’m 6’ 4” and 105+kg and the XL is a perfect fit.

    Of course, there are plenty of brands out there but none as unique / individual and visually appealing in my opinion as TD…

  34. Christian Maggs

    After having this in my basket for ages I decided to buy it in July. 😝
    Item came but was a bit big so did a seamless exchange for a medium., yes it’s expensive but looking around it is pretty much on the money now as all AW21 clothing from all manufacturers has gone up.
    It’s made in Italy 🇮🇹 which is a massive plus for me.
    I am looking forward to wearing it I’m a big thrudark fan it’s quality stuff and you don’t see it often which is a bonus.
    Keep it up thrudark and please pretty please don’t sell to a bigger firm and go mass produced, you’ve got it absolutely spot on with this brand.

  35. Scott Telford

    I’ve had North Face, Berghaus, Canada Goose, the lot and this is Without a doubt THE best jacket I’ve owned….(so far, there will be more purchases here)

    Stunning to look at, ridiculously warm in the cold weather, rain falls off, great hood, loads of pockets.
    Cannot fault it one bit.
    Hats off to you lads, cracking stuff.

  36. Robbie Draper

    After much deliberating as to which jacket to purchase, I settled on the Engage jacket. The second I removed it from the bag, I knew id absolutely made the correct choice. The feel and comfort is fantastic and it looks brilliant. It would not be out of place cutting about around town.

    I’ve bought the jacket specifically for a hike I have planned and I know I’ve made the correct choice. My go to brand was Jack Wolfskin but there is now a new leader of the pack! I’m about to make my second order within as many days, and I know there are more to come. Brilliant product, do not hesitate to purchase!!

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