The Magic Straps are made of a soft fabric, and can be used to pull your bra straps together in the middle. This creates a racerback on either the front or on the back side of the bra. There are three pieces in each box; black, white and skin. The Magic Straps are 1.5CM/0.6IN wide. Soft fabric straps designed to pull bra straps together. Creates a racerback effect. Prevents bra straps from slipping. Can also be used at the front of a bra. Includes three pieces in three different colors