GORE-TEX Summit Inferno Mittens. The GORE-TEX Summit Inferno mittens, made of waterproof and breathable GORE-TEX fabric and thermal down insulation, take mountain protection to the highest level of performance. • Fabric from the back of the hand and glove | 100% recycled polyester with durable water-repellent (DWR) finish without perfluorocarbons (PFC) • Palm lining fabric | 100% goatskin • Lining fabric | 100% recycled polyester • Thermal insulation | 700 fill down filling, certified by Control Union (CU 843098) through the Responsible Down Standard (RDS) • Interlayers | GORE-TEX • Sizes | XXS-XL • Durable GORE-TEX waterproof insert • PFC-free DWR finish for added water protection • Leather palm coating for a durable finish • 700-fill down thermal insulation for the perfect combination of weight and warmth • Progressive pre-curvature is the progressive increase in curvature from the index finger to the little finger, creating a more natural shape for your fingers when they are relaxed in the mitten • Loop to attach the carabiner to the top of the finger • Adjustable drawcord with locking wrist stop for a precise fit • Wrist strap • Wrist tabs to keep mittens from falling off when not wearing • Riveted metal snap button to secure mittens when not wearing wear • Thermal transfer logo and Summit Series™ logo on the side