100% Polyester Material: Shell: 90% Polyamide, 10% Elastane; Wing lingning: 83% Polyamide, 17% Elastane; Cup lining: 100% Polyester. Machine Wash. Wire-free contour bra, give you a better shape while liberate your girls from old fashion stiff underwire bra, make you feel relax all day long; Moisture-wicking lining ,keep you cool and comfortable. Demi wireless seamless T shirt bra features breathable smooth fabric offer a sleek look under clothes; Side panel with lace detail, add more femininity; Low center for plunge neckline, easy to match your outfit. Thoughtful design: different cup size, different widths of shoulder strap and back clasp closure. For bigger cup, we use different specifications of shoulder strap. Wider strap and clasp could give your boobs stronger support and maximum your comfort. We try our best to take care of different needs. Make every customer enjoy the best shopping experience is our service principle. Thoughtful package?Fast delivery?Prompt Email Service. Your satisfaction is our motivation to improve.