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❄️ Gear Up, Stay Warm, Outperform the Cold!
The Carhartt Men's Base Force Heavyweight Polyester-wool Bottom Layer is a premium thermal base layer designed for extreme cold weather. Featuring an 81% polyester and 19% wool blend, it offers heavyweight warmth with moisture-wicking fast-dry technology and odor resistance. Rugged Flex fabric ensures unrestricted movement, while smooth flat-lock seams and a tagless design maximize comfort. Ideal for professionals and outdoor enthusiasts who demand durability, warmth, and all-day comfort in harsh conditions.

























| ASIN | B07MCVZ79P |
| Age Range Description | Adult |
| Best Sellers Rank | 1,232,605 in Fashion ( See Top 100 in Fashion ) 386 in Men's Thermal Bottoms |
| Brand Name | Carhartt |
| Care instructions | Machine Wash |
| Closure Type | No Closure |
| Closure type | No Closure |
| Colour | Black Heather |
| Customer Reviews | 4.5 out of 5 stars 1,696 Reviews |
| Fabric Stretchability | Stretchable |
| Fabric Type | 81% Polyester, 19% Wool |
| Fit Type | Fitted |
| Front Pleat Type | Flat Front |
| Global Trade Identification Number | 00061492038520 |
| Import Designation | Imported |
| Inseam | 30 Inches |
| Item Length | Ankle Length |
| Item Type Name | Base Layer Bottom |
| Item Weight | 204 g |
| Jeans length (inches) | 30 Inches |
| Jeans width (inches) | 38 Inches |
| Leg Style | Skinny |
| Manufacturer | Carhartt |
| Manufacturer Part Number | MBL121-027-L |
| Material Type | Polyester |
| Material composition | 81% Polyester, 19% Wool |
| Model Name | Base Force Heavyweight Polyester-wool Base Layer Bottom |
| Model Number | UM0121M |
| Number of Items | 1 |
| Occasion description | Work/Utility |
| Pants Form Type | Leggings |
| Pattern | Solid |
| Pattern Description | Solid |
| Product Care Instructions | Machine Wash |
| Rise Style | Low Rise |
| Seasons | Autumn-Winter |
| Sport Type | Multi-Sport |
| Style Name | Base Force Heavyweight Thermal Base Layer Pant |
| UPC | 061492038520 |
| Unit Count | 1.0 count |
| character | Sports |
A**R
Last longer than Merino wool
I recently purchased the Carhartt Men's Force Midweight Synthetic-Wool Blend Base Layer lowers and upper, and I have to say, I’m really impressed with it! After wearing it for about a month, I’m very satisfied with both the quality and comfort. I tested these while hunting and while at work. The blend of synthetic and wool material provides a great balance of warmth and breathability, making it perfect for those cooler days. The fit is spot on, it's snug enough to keep me warm without feeling restrictive, and it holds up really well throughout the day. The fabric is soft against the skin and doesn’t itch like some other wool blends I’ve tried in the past. I also love how moisture-wicking it is. Whether I’m working hard outdoors or just running errands, it keeps me dry and comfortable. Carhartt's reputation for durability definitely holds up with this base layer; it feels built to last. I haven't noticed any pilling or wear even after a month of consistent use, which is a huge plus. I’m looking forward to seeing how it holds up over the long term, but so far, it's been an excellent purchase. Highly recommend it for anyone looking for a high-quality, comfortable base layer that can handle whatever you throw at it.
J**E
Great quality, comfortable
Living in Canada, be it for the cold, under my work pants, knee pads or even motorcycle pants, I wear base layers more than half the year! I'm very pleased by those, always looking for a better, still have not found my ideal, this one is promising, time will tell!
J**L
Buen producto
Cómodo , ideal para climas fríos
D**K
Very impressed
5’10, 165lbs I ordered a small and medium due to fitting within the smedium size. I typically wear a medium in Carhartt products and decided to just try them both out to see which one fit better. The small fits well with only one tight spot around the waist band. It’s not enough to cause any issue while carrying a pack during hunting season. The medium also fit well just a little looser. If you properly layer you clothes these work great! If you plan to do activities that cause sweating or getting wet these still work well but there are better options. I typically wear the classic full polyester base layer when I know I’ll be moving a lot, out in the rain, or moving through bodies of water. Being 81/19 polyester/wool blend it’s dries way faster than straight wool. If you’re looking for a good thermal these will do the trick. Reading other comments I’d stress this is just a base layer that needs additional layers to stay properly warm (wearing them alone will not keep you warm).
C**N
So warm!
Super warm. Wash and wear well, so far! True to size and made well!
Trustpilot
1 day ago
4 days ago