This Alegria Leisurelee slipper is made of a vegan shearling upper and lining. It is lightweight polyurethane outsole with built-in arch support with a 1¾ inch heel height. It is very cozy but it is worth noting that this slipper runs large on purpose to allow for coziness and / or perhaps some socks. We fit them in store with or without socks. These are a great winter warmer and they come in a Pink as well.