The Breast Tape Is Made Of 95% Cotton, 5% Spandex And Adhesive. Hypoallergenic, Soft And Comfortable. They Are Ergonomically Designed To Make You Feel Like Wearing Nothing. The Breast Lift Tape Have A Strong Adhesion And Do Not Fall Off Easily. They Are Waterproof, Even Though You Are Wearing It Under The Water Or You Sweat A Lot, They Will Keep Attached To The Body Like The Second Skin. Very Thin So It Isn'T Easy To Detect. Perfect Solutions For Tops, Blouse Shirts, Strapless, Backless, Deep-V, Wedding Dress. Wide Application: Perfect For Backless/Strapless Dresses, T-Shirts, Halter Tops, Wedding Gowns, Sports Bras, Swimsuits.