Size SelectionThis low back bras size ranges from S to XL. (S for 30C or 32A or 32B M for 32C or 34A or 34B L for 34C or 36A or 36B XL for36C or 38A or 38B). If you find yourself in between sizes, it is recommended to order a size up. Backless bra fits for small breasts(A-C cups), Not fits women with larger breasts.Soft MaterialLow back bra made of breathable ice silk fabric, lightweight, stretchy and soft fabric. Backless bra built-in removable soft padding, easy to pull out and can be used for everyday bras or sleeping bras .U-shaped Back DesignBackless Bra U-shaped design show your chariming back. Wire-Free V-Neck backless bra with convertible spaghetti strap and adjustable back single-button design is easy to put on and take off.Suitable Occasions One piece design and thin cup, with adjustable spaghetti straps, the spaghetti straps of low back bras can easy convert to halter bra, criss-cross bra or U-shaped backless bra, This convertible bra is pretty supple and make you feel free to wear halter dress, plunging top, backless T-shirt, deep v evening dress, party, wedding, dating and working. Can fit for any occasion and low back outfit.100 percent Guarantee100 percent refund. If the product you received has any quality problems or you are not satisfied, you can always contact us to deal with the problem, we will try our best to help you solve the problem.