Kamik Simona women's winter boots, classic tight winter boots made of genuine leather and waterproof construction. These insulated Kamik snowshoes have HEAT-MX™ technology, which will keep you perfectly warm even at -20°C. * upper material: ISA TanTec LITE™ eco-leather bottom, taped-seam leather upper * leather comes from a gold-rated tannery for its water, energy and waste management practices * outsole: waterproof and flexible Brome synthetic rubber material with deep , self-cleaning treads with Grip XT for stability in snowy conditions * outsole: deep, self-cleaning pattern with GripXT for excellent stability and traction in winter conditions * sustainable thermal insulation HEAT-MX™ * waterproof seams * moisture-wicking fleece lining * removable EVA insole for cushioning and comfort, a natural and non-toxic Cleansport NXT™ treatment that eliminates odor * loop at the back for easier on and off * lace-up style with side waterproof zip * shoe height is approx. 24cm * comfortable down to -20°C * weight: 998g per pair * circumference for size 7 is approx. 29 cm