Bra strap size:This bra is 18mm shoulder width, adjustable length, can be extended to 42cm, total length 39.5cm (lace part 22cm, lace front part 17.5cm), shoulder strap buckle outer diameter 22mm, inner diameter 18mm. Standard size for everyone. 3 different colors: 3 pairs (6 pieces) of bra straps (black, tinted, white). Can be used with any removable underwire bra. Enough to change, easy to put on and take off the bra, match your bra in different colors, suitable for your daily wear Widely Used:These bra straps match n any bra with removable straps, also can be matched with tank top, backless top, tube top and dress to make you more attractive Adjustable size:Use any what a bra with removable straps. Simply attach the hooks to the bra and adjust the length to fit your bra Easy to Use:Fits most bra sizes, with fully detachable straps/ convertible and adjustable for easy replacement.