M: suitable for 75A, 75B, 75C, 80CL: suitable for 80E, 85A, 85B, 85DXL: suitable for 85E, 90A, 90B, 90DButton design is more breathable for mom, keep dry and comfortable, buttery-soft fabric that is remarkably comfortable to wear, and virtually invisible under clothingNo underwire and cups that drop fully away from the breast.One-hand Access, Button Closure.one-step feeding clasp., Easy to use and discrete nursing clips.Breathable, ribbed gore stretches to accomodate the normal bust size fluctuations nursing moms experienceOur nursing bra features,WIRELESS design makes the bra very soft,it don't stress your rib,the elastic fabric give enough supporting to breast,it will keep the shape after washing.Our bra works well as a maternity bra, a nursing bra, a sleep bra, a workout bra,as well as an everyday bra.