Merino.tech
Merino.tech Men's Thermal Underwear Long Johns Base Layer Pants 165
Merino.tech Men's Thermal Underwear Long Johns Base Layer Pants 165
Crafted from 100% superfine merino wool, these men's thermal underwear pants deliver natural temperature regulation and exceptional breathability for all-season comfort. The medium-weight knit fabric provides natural stretch and UPF 50 sun protection, ensuring reliable performance across cold-weather outings and active pursuits.
Featuring a pull-on closure with a mid-rise fit and flat-front design, these base layer long johns layer smoothly under outerwear without bulk. They are designed for activities including hiking, snow skiing, snowboarding, running, and daily cold-weather wear.
Key Features
| Brand | Merino.tech |
| Product Type | Thermal Underwear Bottoms |
| Department | Men's |
| Material | 100% Superfine Merino Wool |
| Fabric Type | Knit |
| Model Number | 165 |
| Manufacturer Part Number | MP-250 |
| Rise Style | Mid Rise |
| Closure Type | Pull On |
| Fit Type | Standard |
| Leg Style | Skinny |
| Front Style | Flat Front |
| Pattern | Solid |
| UV Protection | UPF 50 |
| Care Instructions | Machine Wash (Delicate Cycle), Hand Wash Recommended |
| Packaged Weight | 4.8 oz |
| Packaged Dimensions | 10 x 9 x 0.7 in |




Highlights
- 100% superfine merino wool knit fabric
- UPF 50 ultraviolet sun protection
- Mid-rise, pull-on elastic waistband design
- Designed for skiing, snowboarding, hiking, running, and outdoor sports
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Materials & care
100% superfine merino wool. Machine wash on delicate cycle; hand wash recommended.
Sizing & fit
Features a standard fit with a skinny leg profile and mid rise. Fits true to size.
Frequently asked questions
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