Basico Active 12-pair Pack No-show Casual Socks *Non Slip* Plain Made in USA and Imported ** Uniquely designed with a silicone finish that will hold your feet & won't slip off ** Designed with non-skid silicone patches to prevent slipping inside of the shoe ** Size 9-11 based on US shoe sizes / 12Pairs ** STYLISH ** ELASTIC band to be a COMFORTABLE solution for all shoes / Delicate Cycle Wash & Air-Dry