The Psiphon SV Pant is specifically created to provide durable weather protection and warmth while allowing a climber to move efficiently and effectively in severe alpine conditions. Features: Weather resistant Serious warmth protection Highly durable Micro seam allowance 1.6 mm reduces bulk and weight Mechanical stretch textile for unrestricted mobility Hybrid Construction Trim fit keeps warmth close to the body Tapered legs for efficiency when walking with crampons Articulated knees Gusseted crotch Front fly with button closure Wind flap Internal webbing cuff loops can be used to keep pant cuff down straps not included Removable low profile suspenders Soft, brushed lined waist Glove friendly adjustable integrated webbing belt Thigh pocket with laminated zip Thigh drop pocket Thigh pockets sit just below a climbing harness leg loops Seamless instep BurlyTM Double Weave reinforcement at lower leg helps reduce crampon damage and snags Trim Fit, Tapered Leg Weight: 590 g 1 lb 4.8 oz Activity: Ice Climbing Alpine Climbing Materials: Fortius 3.0TM 65% polyester, 21% nylon, 14% spandex, 414 gm . A membrane free, air permeable, four way stretch nylonspandex fabric, laminated to a mid loft, heavy weight stretch fleece. BurlyTM double weave 46% nylon, 46% polyester, 8% elastane, 275 gm . A hard wearing, durable, stretch woven fabric with a smooth outer face and a soft inner face that is comfortable next to the skin. A DWR durable water repellent coating helps shed moisture.