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Customer Reviews

Based on 21 reviews
86%
(18)
14%
(3)
0%
(0)
0%
(0)
0%
(0)
l
l.g.
Fabulous mid layer

It’s light, soft and very warm. So nice to throw on on a cool evening at camp or under the riding jacket on a cold morning. It’s provides great warmth without bulk and making your jacket too tight. Love it!

J
J.H.
Excellent Jacket

I was wary of how warm this jacket would be being thin and so lightweight. That fear only increased when I actually pulled it out of the bag the first time. It feels like nothing in your hands and packs down so small it takes up little to no room in your luggage. How can something this thin be warm and rugged? I have no idea but it is! From the moment I put it on, I was toasty warm! It also holds up well riding and working. The outer material, though thin, does not pick easily in normal use...and the occasional puppy wrestling session.

I usually have to wear a windshell over my normal puffy - not this one. The wind does not penetrate it which makes it that much more versatile. The arms are longer than normal, excellent for riding a bike and it's thin enough to wear under my normal riding jacket comfortably. The design of the jacket makes it form fitting and close cut but still gives excellent range of motion. But because it's fitted, it's flattering and looks good being worn as a normal jacket.

Gripes:

Being a men's jacket, it's longer in the torso than a woman's jacket which means I have to pull it up above my hips to zip it and that makes it puffy in the midsection. It would be too big if I ordered a size up. Mosko, please explore the option of making some women's gear with the same awesomeness you make your men's gear.

The jacket runs slightly small anyway, so definitely glad I ordered a size up.

Also, the outer material stains easily. I managed to spill a few drops of some unknown fluid on the front pocket of the jacket and it won't come out.

I would like to see a more rigid collar and possibly zip all the way up the collar.

Overall, this jacket is great and I am pleased with the purchase.

M
M.
Solid first run, can't wait for updates!

First off - I'm a big fan of Mosko and all things Mosko. One of my favorite things about Mosko is seeing their continued growth and updates with each product; they never leave something alone, always looking for improvement in products they already have done. I'm hoping this Jackaloft is no exception!

The Pros:
Thin, light, warm. The material feels good and slides over and under layers really nicely so I never feel anything holding me up when I'm out on the bike. I felt very confident with all the materials involved: the Primaloft Gold is highest quality, YKK zippers are big and no snags with nice feeling, big zipper pulls to use even with gloves. Mosko put their attention into each area and it's apparent. Packing down into the pocket is relatively easy, brilliant, and makes it a no brainer to toss into a bag, even when you're not sure if you'll need it. Packed down it measures roughly 9.5"x7.5"x2.5". The sleeves are Goldilocks length and the elastic cuff is perfect. The styling is also fantastic - no huge logos (very discrete branding) and the contrasting colors in the Lichen are "chef's kiss" The chest pockets look great and the only (small) logo placed here.

The Cons:
With any first version, there are always things to work through. Sizing: I'm generally a large in everything, but with the Jackaloft, I "almost" want to move into an XL. At 6'0 and 195lbs, I opted not to exchange, but I feel the material stress in the shoulders when I'm wearing it around casually. I feel like some stretch panels here would solve this. Once my arms are outstretched for handlebars, this tension is gone. Otherwise, very slimming and arm lengths are great. The Collar: This is the same material and construction as the rest of the jacket, unfortunately that means there's no support or stiffness here to keep a "collar" shape which translates to the collar often folding under or standing up or, generally, just doing whatever it wants. The main zipper also stops at the collar so it has even less control when it's a mid-layer under another jacket (for me, Klim Carlsbad) Would love to see the zipper run all the way up. The Hang Loop: This is totally a nit-pick but I've never experienced it on another garment - when I get home and take off the layers, I hang the Jackaloft (as my other jackets) using the hang loop by the collar. I don't understand what's different, but the loop end up "remembering" it's position of standing straight up even when I put on the jacket. Numerous times I'll be out and either feel the loop rubbing my head or a ladyfriend will end up tucking it in for me. Weirdest thing and I have never thought about it before, but probably because I've never had to think about it before. Pockets: hand pockets are great, no issues there. Chest pockets are stylish but I'm not a fan of snaps - that's just me. Would love to see an internal chest zip pocket, maybe. Not a deal breaker.

Overall, this is a solid mid-layer and one I'm looking forward to using for years to come. The closest equivalent I can find on the market is the Patagonia Nano Puff at $199 and only 60g Primaloft compared to the 80g here in the Jackaloft and I'm proud to be supporting such a great company like Mosko. If you're torn on whether to purchase this, don't be. Pull the trigger and don't look back - you'll be happy you did!

K
K.O.
Thin and warm!

I suspected it was really warm because it was thin and light.
But when I came, that worry disappeared.
PrimaLoft Gold is really warm. I understood this because I am also a PrimaLoft .
Also, the silhouette is very slim and good. Just right under the basilisk JK!

C
C.E.
Size up

I typically run either an L or an XL in T shirts depending on the company. I ended up exchanging (thanks Paulina!) an L that fit, albeit far too tightly ("it's a European cut" as Michael Scott would say) for an XL that fit perfectly. Other than that minor hiccup, this is an excellent bit of kit. I own their Deluge rain gear kit and this adds to it perfectly. Its first week of testing will be acting as an insulating layer commuting in ~30° weather on my 1290 SAR and then finally being my second layer for skiing later on!

Thanks for making more stuff for me to buy!

Jackaloft Insulated Shirt-Jack

Size Guide >

Is it a Shacket? or a Shirt-Jack? Like a Jackalope, the Jackaloft brings the best of two worlds together in a single ultralight insulation layer. The ‘Jack’ comes from ‘Jacket,’ while the ‘Loft’ comes from the body mapped, fully synthetic, PrimaLoft® Gold insulation. It’s super low profile, yet it’s also incredibly warm and highly packable, and it preserves its insulating properties even when compressed under body armor. We designed it specifically for layering under an outer jacket and armor on the bike, but it works just as well around camp or in town.


When it’s not in use, the Jackaloft stuffs into its own hand pocket, and can easily find a stash spot in your pannier, duffle, or backpack.

Don’t let its humble silhouette fool you, the Jackaloft insulated shirt-jack punches way above its weight. Ultralight, highly compressible and super warm, the Jackaloft uses fully synthetic PrimaLoft® Gold insulation with Cross Core technology. This high-tech insulation combines PrimaLoft's top of the line fibers with aerogel (google ‘aerogel’ for more info!), to provide 52% more warmth than the same weight of PrimaLoft® Gold alone. This enables enhanced warmth and decreased weight, resulting in a highly packable, ultralight garment.

Originally developed by NASA, aerogel is composed of more than 95% air, and is the lightest solid material known to man. It’s also one of the most effective insulation materials ever made. When integrated directly into synthetic fibers, aerogel dramatically enhances warming. This isn’t just something you see in charts and stats, you’ll immediately feel the effects yourself when you wear the Jackaloft. On a moderately cool evening, you might be surprised to find yourself leaving the Jackaloft partially unzipped, which is surprising given its size and weight. We packed as much warmth as we possibly could into this very small package.

The size of the Jackaloft is important not only on warm days when it’s packed away on the bike, but also on cold days when you’re wearing it under armor. With insulation, body armor, and an outer shell, one of the biggest challenges we face is how to layer-up without making our riding kits so bulky that we can’t move around. Another challenge is that body armor, a shell, and constant wind pressure on a non-windscreened enduro bike can compress your insulating layer, removing its loft and reducing warmth, similar to what happens on the bottom half of a down sleeping bag when you lay in it. That’s why the Jackaloft uses synthetic insulation rather than goose down: synthetic fibers will maintain their loft even under pressure. That will keep you warmer on the bike.

We styled the Jackaloft as a shirt-jack for a very practical reason: we want this to be the only insulating layer you need on your trip. If we can disguise a highly technical insulated riding layer as a badass garment that you’re stoked to wear around camp or on your next Tinder date, then that’s one less thing you have to pack. Wear it everywhere.

*model is 6ft tall, 175lbs, and wearing a size Medium jacket

Ethically produced in Bangladesh

Read More >
Size
Color
Lichen
Red Ochre
Features
  • Left hand pocket converts into stuff sack with lash tab
  • Two snap closure chest pockets, two zippered hand pockets
  • YKK zippers
  • Elastic cuffs
  • Body mapped Primaloft® Gold with Cross Core Aerogel Technology (80g in chest and
  • back, 60g in sleeves)
  • High performance DWR (Durable Water Repellent)
  • Model is 6ft tall, 175lbs, and wearing a size Medium jacket
  • Weight of garment: 0.90lbs (size L) 
Materials
  • 100% nylon ripstop 20d x 20d face fabric 38g/sm
  • 100% nylon 30d lining fabric 44g/sm
  • 80g Primaloft® Gold with Cross Core Technology (body)
  • 60g Primaloft® Gold with Cross Core Technology (sleeve)
  • C6 DWR (Durable Water Repellency)
  • YKK zippers

In The Wild

Customer Reviews

Based on 21 reviews
86%
(18)
14%
(3)
0%
(0)
0%
(0)
0%
(0)
l
l.g.
Fabulous mid layer

It’s light, soft and very warm. So nice to throw on on a cool evening at camp or under the riding jacket on a cold morning. It’s provides great warmth without bulk and making your jacket too tight. Love it!

J
J.H.
Excellent Jacket

I was wary of how warm this jacket would be being thin and so lightweight. That fear only increased when I actually pulled it out of the bag the first time. It feels like nothing in your hands and packs down so small it takes up little to no room in your luggage. How can something this thin be warm and rugged? I have no idea but it is! From the moment I put it on, I was toasty warm! It also holds up well riding and working. The outer material, though thin, does not pick easily in normal use...and the occasional puppy wrestling session.

I usually have to wear a windshell over my normal puffy - not this one. The wind does not penetrate it which makes it that much more versatile. The arms are longer than normal, excellent for riding a bike and it's thin enough to wear under my normal riding jacket comfortably. The design of the jacket makes it form fitting and close cut but still gives excellent range of motion. But because it's fitted, it's flattering and looks good being worn as a normal jacket.

Gripes:

Being a men's jacket, it's longer in the torso than a woman's jacket which means I have to pull it up above my hips to zip it and that makes it puffy in the midsection. It would be too big if I ordered a size up. Mosko, please explore the option of making some women's gear with the same awesomeness you make your men's gear.

The jacket runs slightly small anyway, so definitely glad I ordered a size up.

Also, the outer material stains easily. I managed to spill a few drops of some unknown fluid on the front pocket of the jacket and it won't come out.

I would like to see a more rigid collar and possibly zip all the way up the collar.

Overall, this jacket is great and I am pleased with the purchase.

M
M.
Solid first run, can't wait for updates!

First off - I'm a big fan of Mosko and all things Mosko. One of my favorite things about Mosko is seeing their continued growth and updates with each product; they never leave something alone, always looking for improvement in products they already have done. I'm hoping this Jackaloft is no exception!

The Pros:
Thin, light, warm. The material feels good and slides over and under layers really nicely so I never feel anything holding me up when I'm out on the bike. I felt very confident with all the materials involved: the Primaloft Gold is highest quality, YKK zippers are big and no snags with nice feeling, big zipper pulls to use even with gloves. Mosko put their attention into each area and it's apparent. Packing down into the pocket is relatively easy, brilliant, and makes it a no brainer to toss into a bag, even when you're not sure if you'll need it. Packed down it measures roughly 9.5"x7.5"x2.5". The sleeves are Goldilocks length and the elastic cuff is perfect. The styling is also fantastic - no huge logos (very discrete branding) and the contrasting colors in the Lichen are "chef's kiss" The chest pockets look great and the only (small) logo placed here.

The Cons:
With any first version, there are always things to work through. Sizing: I'm generally a large in everything, but with the Jackaloft, I "almost" want to move into an XL. At 6'0 and 195lbs, I opted not to exchange, but I feel the material stress in the shoulders when I'm wearing it around casually. I feel like some stretch panels here would solve this. Once my arms are outstretched for handlebars, this tension is gone. Otherwise, very slimming and arm lengths are great. The Collar: This is the same material and construction as the rest of the jacket, unfortunately that means there's no support or stiffness here to keep a "collar" shape which translates to the collar often folding under or standing up or, generally, just doing whatever it wants. The main zipper also stops at the collar so it has even less control when it's a mid-layer under another jacket (for me, Klim Carlsbad) Would love to see the zipper run all the way up. The Hang Loop: This is totally a nit-pick but I've never experienced it on another garment - when I get home and take off the layers, I hang the Jackaloft (as my other jackets) using the hang loop by the collar. I don't understand what's different, but the loop end up "remembering" it's position of standing straight up even when I put on the jacket. Numerous times I'll be out and either feel the loop rubbing my head or a ladyfriend will end up tucking it in for me. Weirdest thing and I have never thought about it before, but probably because I've never had to think about it before. Pockets: hand pockets are great, no issues there. Chest pockets are stylish but I'm not a fan of snaps - that's just me. Would love to see an internal chest zip pocket, maybe. Not a deal breaker.

Overall, this is a solid mid-layer and one I'm looking forward to using for years to come. The closest equivalent I can find on the market is the Patagonia Nano Puff at $199 and only 60g Primaloft compared to the 80g here in the Jackaloft and I'm proud to be supporting such a great company like Mosko. If you're torn on whether to purchase this, don't be. Pull the trigger and don't look back - you'll be happy you did!

K
K.O.
Thin and warm!

I suspected it was really warm because it was thin and light.
But when I came, that worry disappeared.
PrimaLoft Gold is really warm. I understood this because I am also a PrimaLoft .
Also, the silhouette is very slim and good. Just right under the basilisk JK!

C
C.E.
Size up

I typically run either an L or an XL in T shirts depending on the company. I ended up exchanging (thanks Paulina!) an L that fit, albeit far too tightly ("it's a European cut" as Michael Scott would say) for an XL that fit perfectly. Other than that minor hiccup, this is an excellent bit of kit. I own their Deluge rain gear kit and this adds to it perfectly. Its first week of testing will be acting as an insulating layer commuting in ~30° weather on my 1290 SAR and then finally being my second layer for skiing later on!

Thanks for making more stuff for me to buy!

Warranty and Crash Replacement

We offer an industry-leading limited lifetime warranty on all our sewn seam bags, and a two year warranty on welded seam bags. Contact us for discounted crash replacement pricing.

Learn More

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