La Leche League Heavenly Wireless Padded Nursing Bra with Lace (4502). Soft cotton-blend nursing bra that's focused on your comfort with function that gives you control and support. Made of cotton, polyester, nylon and spandex. Wireless, contour/t-shirt cup is lightly padded for smooth coverage and support. Soft-backed, restricted stretch elastic band support sling in inner cup helps to hold and position breast. Plastic nursing clip unfastens with one hand to allow cup to fold down for easy nursing. Support sling stays in place with cup down. Lace trim at neckline and center adds a feminine touch. Center - arched center panel. Sewn-on elastic along underside of front. Sides and back are stretch cotton with powermesh lining for extra support, and sewn-on elastic at top and bottom edges. Minimal stretch, exposed elastic straps with brushed undersides adjust at back with coated metal hardware. Hook-and-eye closure at back with soft lining and coated metal hardware. See our Size Chart (above right) for hook counts. Leotard back. Nursing/Maternity Bra Basics: What's the difference between a maternity bra and a nursing bra? When should you buy these bras? Tomima answers your questions and provides special tips on how, when and why to buy nursing/maternity bras. Please Note: Measure yourself just 3 weeks before your due date to find your optimal nursing bra size.