Simply stated, the Muck Boots Winter Wellie Tall women's boot may just be the most attractive and comfortable boot you'll ever wear in inclement weather. Set in 100% waterproof rubber with a glossy finish for added appeal and easy maintenance. 4mm CR Flex-Foam keep feet comforted, while warm fleece lining keeps them cozy and warm. Dual density EVA insole with gel cushion insert provides lasting support and traction for a fatigue-free gait. Comfort rated from -20F to 50F, the Muck Boots Winter Wellie Tall is a boot you won't regret adding to your collection. Material: Rubber.