Rubber soleBREATHABLE WOOL-LIKE UPPER: The wool-like upper makes slippers warm and breathable. It??s suitable for wearing all day.COMFORT & SOFT CORAL FLEECE LINING: These house slippers with cozy coral fleece lining are the perfect home shoes for all seasons. Comfortable lining can effectively absorb sweat and keep your feet dry.NON-SLIP SOLE: The outsole surface is covered with grain textures that greatly increase friction with the ground. No more slipping & sliding.GREAT HOUSE SLIPPERS: It is suitable for wearing post-bath or spa, cooking in the kitchen, playing with your kids, drinking afternoon tea in the garden, walking to the mailbox, taking out the trash, watering the lawn, walking the dog, or going out to sign for parcels.MACHINE WASHABLE: Machine washable slippers, easy to clean. We stand behind all of our high quality products so we offer a 30 days No Question Asked on all our home slippers. Please contact us and we will be pleased to assist you.