100% recycled PET laces. Padded collar for a comfortable fit around the ankle. 50% recycled PET lining is comfortable, breathable and environmentally conscious. Sockliner allows you t get the right fit every time. OrthoLite PU footbed made from 5% recycled rubber provides all-day cushioning and support. Nylon shank for arch support. Outsole made from 34% recycled rubber is designed for traction and durability.