Women's Universal Thread Brooklyn Backless Mules-Rust, NWT. Universal Thread round-toe mules complement a variety of looks and styles. Flat mules offer you a comfortable fit all day. Easy slip-on style makes getting ready for your day all the easier Slip On No Heel Medium Shoe Width Closed Toe Textured Upper Upper Shoe Material: 100% Polyester Sole Material: 55% Polyester and 45% Plastic