Glamourmom Nursing Bra Full Bust Slimming Long Top Tank: 70% Nylon, 30% Elastane. Nursing Bra: 92% Cotton, 8% Elastane Full built-in nursing bra with adjustable chest band Shapes and smooths bust, waistline and back Inner cotton bra cup frame for continued breast support during nursing Wide, adjustable, smooth elastic bra straps for extra support Nursing bra hook closures for easy one-handed access