With its Aquabloc waterproof shell, and its layered insulation package, the Gordini Men's The Polar Mitt really does live up to its name. Breathe weave stretch woven fabric backs the hand, while deerskin covers the palm and finger surfaces. Naturaloft insulation package includes goose down for warmth and Lavawool for moisture management.. Cold hands, you've met your match. Shell is genuine deerskin with breathe weave stretch woven fabric and faux suede trim. Genuine deerskin finger area, with digital grip palm and thumb patch. Naturaloft insulation package: 600 fill power of 70% goose down 30% waterfowl feathers all around the hand, Lavawool moisture management system lining on the palm with thermo plush on the back of the hand. Ultra breathable, waterproof, windproof Aquabloc insert. Gauntlet construction. Palm and thumb reinforcement.