Liner: Pro Flex Performance (Intuition); Shell: Grilamid BIO with Carbon Core; Closure: Upper Buckle + HRS Strap + Wave LT + Booster Active Power Strap; Ski/Walk Mode: Speed MLT; Waterproof/Breathable: PFAS Compliant; Outsole: Vibram Cayman LT (ISO 9523); Tongue: Pebax; Cuff: Pebax Rnew with Carbon Core; Last: 102mm; Weight Reference: 1470g; 3lb. 3.8oz (1/2 pair size 27)