1000 Grams of PrimaLoft ECO FOOTWEAR insulation. Durably Waterproof and Breathable GORE-TEX fabric. High-abrasion-resistant TPU shield. Lightweight rubber/EVA outsole. Maxprotect Level 3 for harsher, cooler, and inclement environments, or sedentary physical activities. Nubuck leather upper with ripstop fabric.