Simms - M's Midstream Insulated Pant - Jasper

Wool's natural properties provide resilience and comfort across a wide range of temperatures and humidity, plus it offers exceptional odor resistance — ideal for travel, daily wear, and backcountry stays. Lavalan® Sport brings the timeless benefits of wool insulation to modern technical outerwear, offering a natural, renewable solution for temperature and moisture management — perfect for streamlining your kit on extended trips. When it's cold and damp, nothing brings back the cozy like a pair of insulated pants. Whether it's a chilly summer evening in camp, or you're extending the season year-round, Midstream Pants prove versatile and comfortable.

Lavalan® Sport 40G wool lofted insulation
Abrasion-resistant nylon textiles used for both face and liner with C0 DWR finish for water resistance
Durable nylon overlays on the knees and seat
Integrated belt with quick-release buckle and elastic waistband ensures a comfortable fit
Zip fly construction
Two front drop-in hand pockets and two rear drop-in pockets
Articulated knee and gusset construction for freedom of movement
Fabric Tech:

Main/Liner: 85% Nylon, 15% Spandex woven; Overlays: 96% Nylon (45% recycled) / 4% Spandex woven

Insulation: 70% Virgin Wool, 30% Corn Based PLA

• Lavalan® Sport 40G wool lofted insulation
• Abrasion-resistant nylon textiles used for both face and liner with C0 DWR finish for water resistance
• Durable nylon overlays on the knees and seat
• Integrated belt with quick-release buckle and elastic waistband ensures a comfortable fit
• Zip fly consruction
• Two front drop-in hand pockets and two rear drop-in pockets
• Articulated knee and gusset construction for freedom of movement