Material: Clear adjustable bra straps are made from environmentally friendly and highly resilient TPU material;with plastic hooks,make it more gentle on skin.Bra clips are made from plastic. Quantity:3 pieces of bra straps holder (each color for 1 pieces) and 9 pieces of bra clips (each color for 3 pieces), enough for your using and replacement. Cotton Bra strap and clips: non-slip bra strap clips are approx. 21 cm /8.27"in length and 1 cm/0.4" in width, can be adjusted to the length you need, bra clip is 3.5 x 4.3 cm/1.4"*1.69". Make you more beautiful: provides additional lift and support, can increase cup size, boost to your silhouette, give the appearance of a fuller bust line, make you more beautiful, to create a sexy fuller look. Uses: bra strap holders are suitable for doing sports, running, climbing, exercising and other strenuous exercises, good match with most bras