Maximum-warmth women’s 35K trail pants with F.A.S.T. 4.0™ flotation, ACMT™ climate control, and drop-seat access.

Built for peak trail performance in extreme winter conditions, the FXR Women’s Adrenaline Pants combine maximum warmth, advanced climate control, and premium weather protection. The Omni-Stretch™ nylon and spandex outer shell uses a HydrX 35K™ waterproof, 25K breathable, and windproof laminate with a PFAS-free DWR finish to help block snow, moisture, and cold air while maintaining flexible mobility. Abrasion-resistant 660D nylon reinforces the insteps and hems, while F.A.S.T. 4.0™ and FXR Thermal Flex™ insulation deliver a combined 240g insulation value, a maximum warmth rating of 10, and added flotation assistance. 

The ACMT™ dual-layer climate control and anti-condensation system works with a seam-sealed lining, integrated venting, perforated F.A.S.T.™ insulation, and Dry Vent™ thigh pocket vents to help manage heat and interior moisture. Full-length two-way leg zippers and adjustable removable suspenders with a rear drop-seat function add convenient access, while thermal and dry seat and knee inserts provide added protection in key contact areas. Storm cuffs, front and rear boot-lace retention, adjustable leg length, and reflective details complete the high-performance cold-weather design.