Coobie Seamless Comfort Bra Microfiber,Nylon,Spandex Imported Seamless, wireless bra: No hooks, clasps, or wire. Back is Smooth. Extra wide, fixed bra straps. Nylon/Spandex fabric blend Small Bra fits: 30A to 34D, Medium Bra fits: 34A to 36D Large bra fits: 38A to 42D, Extra Large Bra fits: 42A to 48D/DD