Ice Jenna Features: Comfort zone down to -35C Women Up to Size 13 Retractable cleat combine anti-slip outsole 100% Repel Leather 100% Waterproof membrane 200 gr Thinsulate insulation Waterproof Zipper Lining: 50% Merino wool / 50% Polyester Removeable polyurethane insole Removeable Aluminium/Felt layer Natural rubber outsole Rust-resistant stainless steel cleat Cleat can be replaced Sole has a Patent approved NexGrip Women's Ice Jenna Winter Boots