Mens Size 10 classic slipper, *never worn* An effortless take on our icon with the same rich suede and soft sheepskin, the new Classic Slip-On offers easy entry and a laidback look. Lined in our signature UGGplush™ blend of upcycled wool and plant-based lyocell, it's finished with an ultra-lightweight outsole for grip and cushioning. The outsole of this product is either a SugarSole™ outsole, which is a responsible compound using sugarcane foam that allows us to reduce dependency on fossil fuels by replacing petroleum-based ethylene, or a Treadlite by UGG™ outsole.