it is a bra extender, three common colors white, black an peach. amazing experience of comfortable, if u attach any one of these straps with your bra, as shown in picture. if your cup size is smaller than ur waist and u feel suffocated, as the strap of ur bra is small, u can extend ur strap just by fixing itu can choose any color according to ur bra color. l bought 3 pieces from London, one was left, very good experience, giving in very less price