Material CompositionNylon High QualityThe bra strap clip is made of nylon, and the buckle is made of rubber, smooth and lightweight, so you don't have to worry about scratching your skin Adjustable SizeThe natural length of the bra strap holder is 19cm, so it fits bra straps within this width Adjustable DesignThe elastic bra strap clips are adjustable and stretchable, so you can adjust the length according to the distance between the 2 shoulder straps. It fastens your two bra straps from the back or front, keeps them connected and prevents them from slipping Comfortable ExperienceThe bra strap holder can convert any bra easily and comfortably. The improved fit offers a full cup size for a fuller, sexier cleavage and prevents those pesky bra straps from digging into your shoulders for uncomfortable problems Widely UsedBra straps prevent the straps from being visible in t-shirts, tank tops, dresses, tracksuits, racerbacks, etc., suitable for sports, running, climbing, exercising and other strenuous exercise