The Patagonia Triolet is up there with the best Ski Touring pants available. Built with a lightweight Gore-Tex 3L waterproof/breathable fabric it can handle the worst weather known to man, whilst not weighing you down. 

Feature-wise it holds up as well, with full length zips down the side for huge ventilation or easy-on/off and an excellent pattern for unrestricted movement while ski touring.

Features

• Three-layer durable waterproof/breathable and windproof GORE-TEX fabric with a 100% recycled polyester face for rugged protection
• Articulated pattern and gusseted crotch for mobility and comfort under a harness
• Separating waist has two-snap closure and zip fly; belt loops and jacket-attachment loop at rear; interior adjustable elastic tabs customize fit
• Full-separating side zips use two-way waterproof zippers and secure at waist and cuffs with snap tabs
• Two vertical front pockets are welted with DWR (durable water repellent)-treated zippers
• Double-cuff design has a durable scuff guard, a separating internal gaiter (with hook-and-loop plus snap closure), gripper elastic and tie-down loops