The Tremont Chelsea is made of premium unlined heavyweight uppers from an LWG Silver-rated tannery for comfort and durability. The boot features a slip-on style with dual goring for easy on/off, an EcoSmart® fiber footbed cover for exceptional comfort, an OrthoLite® PU footbed made from 5% recycled rubber for all day cushioning and support, and a non-marking outsole made with our stickiest recycled rubber.