Montbell Thermawrap BC Jacket

I have bought and used two of these twelve ounce mid-layer jackets--use them with a great shell--and they are amazing little heat generators during movement. I wear one base-layer underneath, or sometimes two if it looks like its going to get warmer and I won't quite need the mid-layer jacket, but I wear this jacket trekking mountains across the Pacific Northwest, year round. The sleeves are long and this is great because it covers potential cold spots at the wrists. The rear hem is a bit lower than the front and this provides coverage in bending. The neck opening is large enough to accommodate high neck base-layer shirts. I wear it specifically for trekking and it's great. Will buy another when it's time. I'm just over six feet tall, weigh one hundred fifty-five pounds and the medium is perfect. If it's very cold, I mean fifteen or twenty degrees, I use the Montbell Mountain Guide Jacket instead. Check it out! Above those temps I use the BC.
On the trail when I'm not trekking I'm usually in my sleeping bag, but the BC by Montbell is meant to be worn during movement in colder weather. If you're lizard lounging or posing around base camp for extended periods it won't keep you warm in cold or frigid temperatures. If you trek, buy it! It's slim cut and if you need something a little fuller, GoLite makes a similar product that may suit you, called the Cady (like Cadillac) synthetic insulated mid-layer jacket.

This jacket is it! I had been in the market for a light weight, synthetic, packable jacket for my multi-day trips. I've taken this jacket on a 4 day/3 night backpacking adventure around the Four Pass Loop in CO and a single overnight in the snow to the Uncompahgre Wilderness. This jacket more than stood up to expectations. Very light and packs down to about the size of a Nalgene without compromising warmth & functionality. I snagged it several times on tree limbs or rocks expecting to have ripped a hole and see fibers falling out, but there wasn't even evidence of a scratch. When I ordered this jacket, I also ordered a Patagonia nano-puff jacket to compare. The Mont-Bell was not only more stylish, it fit better too (the Patagonia was ballooning out around the waist. Kind of felt like wearing a trash bag). I appreciate the flex material down the sides that allows stretching if you need it, but without the hassle of cinching a draw cord. The dual chest pockets are a plus as well. I am 6'1", 165 (tall and skinny) and ordered a Medium. The fit is nearly perfect. I wish it were just a tad longer, but with my frame, I'm always stuck deciding between a Medium that's a bit short, or a Large that's too wide. If you're contemplating, buy this jacket...well worth the investment!

I have the ultralight. My dimensions: 40" chest. 31" waist. I can buy almost any medium off the rack and it fits. My dress jacket size is 40 with no alteration. I am right at the upper end of the medium size for Patagonia and Montbell.
The ultra light fits like my tailored made suits from Hong Kong. It is a layer piece, but I can make it by with a light sweater underneath, but the armpits are a bit tight.
Material is light ripstop. There is no drawcord at the waist. The pockets are now zipped, but mine is the older version.
I put it under a hard shell, or a hoodless softshell and I am warm into the upper 20's.
It packs small. I took it to Glacier last year and wore it in the evening with a t shirt underneath. Worked great.
The material is light. It is shiny. The jacket is NOT PUFFY. It will not make you look goofy or fat uptop. You can beat this up quick if you are rubbing up against things and it will rip if you are around sharp objects.
Tight at the waist. THIS IS SLIM FIT, probably the slimmest fitting synthetic jacket our there. Unless you are of athletic build SIZE UP.

I'm 6'3, 160-165 lbs (depends on the day). That's to say, I'm tall & thin with an athletic build (40inch chest, 31inch waist). I purchased this jacket in a large and medium to see which would best suit my 'tween size needs (in most brands I'm a medium, although I tend to stay away from Marmot and North Face altogether because of their blocky fit; most Patagonia & Arc'teryx mediums fit me pretty well). I purchase items for their intended use and fit, so I was looking for the BC to be form fitting, but with enough flex/give to accommodate high output activity use. The large was too big all around, with the way too spacious torso being the biggest issue. The large would have only worked, MAYBE, if I was planning to layer under it big-time (i.e., planning to wear another full-on jacket underneath). The medium, however, fit perfectly (plenty of length in the arms, nice tailored fit all-around) and looks great! My wife commented that it was one of the coolest pieces she's seen me in. Haven't gotten the chance to test its mettle in the field, but it is definitely a stylish, lightweight & warm jacket!

Love the Thermawrap BC Jacket. Fit is good (perfect length) with the sleeves being just a bit long (I'm 6'2" 195 lbs and am wearing the XL). Sleeve length would be OK if the sleeve elastic was tighter. The stretch material on the sides extends up the back of the shoulder just enough to give great freedom of movement and no binding. I am wearing the jacket for everyday use.......and skiing with and w/o a shell depending on the temps. For me it's the perfect combination of warmth and breathability. Love the zippered pockets.
The only fault I've found is that the stretch fleece material on the sides,sleeves, and collar is showing signs of wear rather quickly. The main nylon material seems durable.......but the stretch fleece needs to be a better material ( stronger elastic and more resistant to abrasion). Great jacket, but we'll see how long the stretch material lasts.

Let me start by saying I really like this jacket. This bad boy has been able to handle everything I have thrown at it to this point. It is warm and the material combination along with strategic panels allow for easy movement. It is simple and to the point. If you are looking for a one quiver jacket, this is not it. This is great for around camp and around town.
My one issue is the fit. I am 6'3 230 but in good shape. I would wear a large in most jackets but was advised to order an XL in Montbell. The fit is correct in the neck and sleeves. It is not a good fit in the torso. It is way too loose. Once again this is not a huge knock, but it is something to consider when ordering.

This jacket does not look like much, thin and scant and just does not look like it provides a lot of insulation. Could not be farther from the truth, this jacket is incredibly warm, providing surprising warmth and surprising comfort in the cold. I generally only wear this stand alone if I am belaying on a nice winter/fall day, or if I want some warmth and don't need a shell, other than that I use this exclusively as a mid layer and it works incredibly well. Warm, lite compact and plenty of flex. I love it. I wear a medium in most products at 5'10 160 and I wear medium in all of montbell products.

So far I really like this jacket. I'm 5'7" 160 but with big shoulders (40 sportcoat) and ordered the medium and it fits great. I ordered it to use as a laying piece, which it works awesome as, but I've also been using it as my around town coat too. I live in the PNW, so I needed something that I wasn't afraid to get wet and this has repelled it's share of rain already. I haven't put it through the paces on BC ski tours yet, but I'm pretty confident with the fleece panels on the sides it will do the trick.

5'10"- 170 lbs- 15.5" neck- 33" sleeve - Ordered Medium for a fitted athletic functionality for single use and layering under a shell. Pockets are great. DWR works great. Sleeves are a bit long, but I've found them to work well w/ gloves, either under gauntlet (marmot randonnee) or over a pair of liners. Warmth to weight is as good as it gets.
Exactly what I was looking for!

Awesome insulating layer. Bought it for my 30 day section hike of the AT. I have had problems finding long sleeves that are long enough for me (6'6" with 17.5 inch sleeve), but this jacket is great in size XL. Overall amazing jacket and I absolutely recommend it.