Brand Name: Faucet Sock | Material: Thinsulate Waterproof Nylon | Self Sealing: No Protects outdoor faucets from freezing. Helps prevent water freeze-up and costly repairs. Slip over faucet and secure with attached string tie. Size small is for wall faucets. A double layer of 3M Thinsulate covered in a waterproof nylon guards against wet and cold. | Protects outdoor faucets from freezing | Helps prevent water freeze-up and costly repairs | A double layer of 3M Thinsulate covered in a waterproof nylon guards against wet and cold | Slip over faucet and secure with attached string tie | Small size