9% Cotton, 32% Modal, 19% Spandex HANDS FREE NURSING & PUMPING BRA (Patent Protected Design) Momcozy Nursing and Pumping Bra can be used for breast feeding, pumping or both together. A perfect choice for working moms. The X STRUCTURE & ADJUSTABLE SHOULDER STRAPS It is designed to hold bottles and shield in place securely and comfortably. The adjustable shoulder straps provide more adjustment, also you can cross the back straps. DETACHABLE CLIP DESIGN With one-step breastfeeding clasp, it is easy drop cups for convenient feeding and protect your privacy. COMFORTABLE MATERIALS - 49% cotton, 32% modal, 19% spandex. You can wear it all day long and allows you to go about your normal routine.