NexGrip Ice BOULDER M 100G Men’s Winter Boot Birkenstock Black while supple leather linings cradle

while supple leather linings cradle the foot in softness

Durable rubber traction outsole

Walk in comfort all day long while knowing your feet are riding high in style

Real rubber sole

Comfort zone down to -35C

NexGrip Ice BOULDER M 100G Men’s Winter Boot Birkenstock Black while supple leather linings cradleComfort zone up to (100G: 15C) (200G: 30C) Mens size up to 14 Retractable crampon combined with non slip sole Premium 600D nylon 100% waterproof membrane Available in 200g and 100g Thinsulate insulation Lining: 50% Merino Wool 50% Polyester Removable polyurethane insole laminated with 50% wool 50% polyester Removable weather stripping insole made of aluminum felt Real rubber sole Stainless steel crampon Anti corrosion Replacement crampon available New