100% Nylon hook_and_loop closure Hand Wash Bra Ext material: made of soft, comfortable and breathable cotton material with stainless steel hooks. 2 Hook/3 Hook/4 Hook bra ext comfortably extends the reach of your bra band to about 2 inches. Suitable for adjusting your new bra and old bra's size in case of weight gaining, pregnancy and bra's shrinkage. Designed to meet all active and pregnant women. These amazing little ext s are a great addition when purchasing your maternity clothes or when you need a little relief from a too-tight band. Package Included: 3pcs 3 Rows x 2 Hooks Bras ext , 3pcs 3 Rows x 3 Hook Bra ext , 3pcs 3 Rows x 4 Hook Bra ext s.(Black, White, Beige) Adjustable length. Fit for most size bra. 2 hooks: 1/2 inch between hook centers. 3 hooks: 3/4 inch between hook centers. 4 hooks: 3/4 inch between hook centers. Easy to use: just attach the hooks on the underside of the ext to your bra hook loops, then use the hooks on your bra to attach to the hook loops on the front side of the ext .