High quality fabric, 93% Nylon & 7% Spandex, comfortable elastic fabric, without oppression when wearing.【If you're pregnant or breastfeeding ,please consider one size larger than normal ∩_∩】 Design Features of the nursing bra: 1: Deputy shoulder straps inner; 2: Front one-hand open up clasp for easy breastfeeding; 3: Under-wireless cups(Without pads inside); 4: Soft side slings; 5: Wide elastic underband; 6: 4 Hooks & Eyes back closures fits your size better; 7: U shaped Back Adjustable Straps: Can be tighter or looser to fit you better and maximize your wearing comfort Wireless soft cups close fit to your body and provides maximize comfort during pregnancy and breastfeeding. Tips:The Size Chart has been updated,please refer to the size before you order.【SIZE CHART:M--Fits for 32ABC 34AB/ L--Fits for 34C 36AB/ XL--Fits for 36C 38BC/ XXL--Fits for 40ABC】 Best gift for the mothers who during breastfeeding and pregnancy, if any problem, just contact us free, we'll solve it for you.