Tretorn Hybrid Boots functional waterproof boots, designed for urban use. ARCH HYBRID is a winter lined and 100% water-proof hybrid shoe. It has Tretorn’s classical Scandinavian clean design and keeps you warm without compromising on either style or function. Made for wet days in the city - this is a true icon of the future. Arch has been made using PVC free natural rubber. It has a neoprene upper lining, and an inner lining which makes it light, warm and water-proof, and adds extreme comfort. Arch Hybrid has a zip at the back, making it easy to put on and take off the shoes.