Maybe you will not be going to the Arctic any time soon but these Arctic Sport boots from Muck have a comfort range of -40 degrees to 4 degrees Celsius and will definitely keep you warm throughout the cold season.These green tall shaft wellington boots are manufactured from 100% waterproof rubber and 5mm CR flex-foam upper for comfortable cushioning. The four-way stretch nylon wrapped around the shaft adds flexibility to the design and it is abrasion-resistant, lightweight and smooth against the skin.The lining of these knee-high boots is made of fleece for added warmth and breathable Airmesh to wick away moisture and keep your feet dry. The removable, contoured footbed moulds to your foot to provide cushioning support. These waterproof boots feature double reinforcements in the heel, Achilles and instep areas to provide support while the 2mm thermal foam underlay added to the instep ensure your feet stay warm. A lightweight layer of cushioning is also provided by the EVA moulded midsole.Finishing these winter boots is the rugged, durable and shock-resistant MS-1 moulded rubber outsole with aggressive treading. The reinforced toe and wrap-up bumper design prevent scuffs and damages and give extra protection. Providing comfort, protection and durability these Arctic Sport extreme weather conditions boots are the best you can get this side of the Arctic.â?¢ Rubber upper with shaft made of CR-Flex Foamâ?¢ MS-1 moulded rubber outsole with aggressive treadingâ?¢ 2mm thermal foam instep underlayâ?¢ Removable, contoured footbedâ?¢ 100% waterproof