Baffin - Impact (Black) - Women's: Easy adjustable double buckle closure system. Buckles will remain flexible even in low temperatures. Locking snow collar for deep snow protection. Created with 1000D nylon. Temperature rated for -100 C/-148 F to withstand the most unforgiving cold. Removable InnerBoot system provides lightweight, thermal insulation and moisture management. GelFlex shock absorbing midsole increases comfort and adds another layer of insulation. Aggressive, self-cleaning tread pattern for superior comfort and excellent traction.