The unique design of the intertwined laces, which are also made of recycled plastic, perfectly adapts to your foot. Comfortable wearing is also guaranteed by the iconic KEEN Original Fit cut with generous space for the toes. Thanks to their design, UNEEK O3 sneakers are lightweight, breathable and environmentally friendly – we used recycled materials for their production and created a minimum of waste. Water resistance is guaranteed by ecological DWR treatment without PFAS chemicals. The lightweight foam midsole provides maximum comfort and with the high-quality natural antibacterial technology Eco Anti-Odor you don't have to worry about unwanted foot odor.