For facing the coldest winter days without ever getting cold feet, even in slushy snow. Why it's a great choice for winter Keeps feet warm even when wet Keeps snow out at the collar Slips on in seconds, no laces to fuss with Solid grip on snow and ice Soft comfort from the first step A more eco-friendly choice The Thermoball Lace Up boots are built for the coldest winter days. Thermoball Eco insulation, made from 100% recycled polyester, keeps your feet warm even when they get wet, while the waterproof DryVent membrane blocks moisture from outside. The TNF pull loops let you slip these boots on in seconds, even with mittens on. Technical features Adjustable collar bungee helps keep snow out Comfortable OrthoLite Eco Lt footbed, made with 5% recycled rubber content and 8% plant-derived bio-oil instead of petroleum Oso fleece collar lining for added comfort Rubber outsole for increased traction Synthetic mudguard helps keep out the elements Thermoball Eco 100% recycled polyester insulation keeps feet warm even when wet TNF-branded webbing pull loops on both sides for easy pull-on Upper made with 100% recycled P.E.T. ripstop with a non-PFC durable water-repellent finish Waterproof DryVent membrane A warm, waterproof winter boot ready for every outing, no matter how low the temperature drops.