Ace brand tennis elbow braces are washable. Open the pouch in the brace that holds the air cushion and remove the cushion. Place the cloth section of the brace under warm, running water. Add one or two squirts of dish soap and hand wash the cloth. Rinse until the cloth is free from soap residue. Lay the cloth brace flat and allow it to air dry. Insert the air cushion into the dry pouch and secure it.