Kamik Men's Nation Plus Waterproof Winter Boots - If you are looking to have fun in the cold the Nation Plus will let you while maintaining comfort from the wet and cold. The removable liner is a 'plus' feature for you. Temperature rated -40 degrees F Waterproof suede & nylon upper Seam sealed waterproof construction Removable 200b Thinsulate foam liner Moisture wicking lining Padded collar & gusset tongue Waterproof & flexible rubber shell Rustproof speed lacing system Style: WK0010N