Different manufacturers use different methods for fastening the flap to the cup, including squeeze, snaps, clasps and hooks. Most nursing bras are designed with cup flaps that fasten at the apex of the bra, at the point where the shoulder straps attach, allowing the mother to simply pull the top half of the cup down to facilitate access to the nipple. Other designs include flaps that fasten between the cups at the center of the bra, zippers under each cup, and a cross-over design that allows the woman to slip her breast out. Experts recommend that before buying a nursing bra women should try on the bra and experiment with opening the flap with one hand. Some designs utilizing stretchable fabric are suitable for smaller-breasted women, allowing them to pull the entire bra up over the breast to facilitate nursing.