Made out of 3M Thinsulate™ insulation: B400 (420g/m2). Waterproof, Windproof and Breathable DINTEX® membrane. ATOP technical lacing system and Back pull-up loop. Wear-resistant outsole with advanced strength and durability through cold rubber polymerization. and Reinforcement layer and insert for increased stiffness and reaction. D-ring and lower tongue loop for gaiter/cuff strap attachment to help prevent deep powder ‘creep’.