evo.com | Helly Hansen Insulated Pants > Standing at the top of a run in a whiteout is no place to feel a cold gust through your pants, which is exactly why the Helly Hansen Alpha Lifaloft Pants pair a 4-way stretch shell with HELLY TECH Professional weatherproofing and Lifaloft insulation underneath. 3D mesh construction lets the pants breathe on the skin track up, while articulated knees and a snow gaiter keep you dialed on the way back down. Lining 100% Polyester Regular Fit 4-Way Stretch Fabric Back Thigh Ventilation Zippers RECCO(R) Advanced Rescue System | Helly Hansen Alpha Lifaloft Pants Men's 2027 - 2X-Large Black | Polyester