The Arctic Adventure winter boot is a welly with a difference. Designed to keep even the most experienced explorer's feet warm in extreme temperatures. Key Features: Brand: Muck Boots Available Shoe Sizes: UK 3/UK 4/UK 5/UK 6/UK 7/UK 8/UK 9 Colour: Navy Department: Women Style: Bootie Upper Material: Neoprene Customised: No Lining Material: Warm Fleece Outsole Material: Rubber Type: Boot Closure: Slip On Heel Style: Flat. This boot is 100% Waterproof and 100% MUCKPROOF, featuring a 5mm Neoprene bootie for comfort and performance. It includes a warm fleece lining made from soft, insulating, light-weight, performance materials for ultimate warmth and comfort. The tall, slimming look is complemented by additional Achilles reinforcement for added protection. A lightweight midsole provides all-day comfort and support, and it's finished with a light gripping rubber outsole. Upper: Neoprene; Lining: Warm Fleece; Sole: Rubber. Care Instructions: Wipe Clean only. Heel Height: 2.0 cm.