Breathable cotton with stainless steel hooks The fabric part is polyester with velvet, soft and comfortable; Leave no trace, no pinch and no itching on your delicate ski; The metal hooks are made of stainless steel, which would not fade or rust. Extends the life of the bra: The bra extender is removable and adjustable. It is applied to increase the size range for an inappropriate bra that is too tight. Helps adjust your new bra and your old bra size for weight gain, pregnancy and bra shrinkage. Easy to use: Attach the hooks on the bottom of the extender to your bra's buckle, then use your bra's hooks to secure the loops to the front of the extender. Material: Breathable cotton with stainless steel hooks Size: Unstretched bra extender strap: 9.8 x 3.2 cm/ 3.85 x 1.25 inch (LL) Each of 2 metal hooks are spaced approximately 1.27 cm/ 0.5 inch Warm Notice: We recommend hand wash in warm water and air dry. Please make sure these 3 hook bra extenders fit your bra before purchase. Package includes: 9 x 2 hook 3 bra extenders rows