Details, Size & Fit.Cut from smooth,stretch fabric, The Yummie Tummie Mallory Racerback Brais The ultimate everyday bra.The slip-on bra features Outlast fabric technology, which regulates your bodytemperature by storing your body heat and releasing it when you're cold. Soft, supportive cups No padding or wire Smooth, stretch fabric Outlast technology regulates body temperature Adjustable racerback straps Slip-on, seam-free design for a smooth,comfortable look.Cold machine wash. Material: 43% Tencel, 43% Outlast, 10.5% Nylon & 3.5% Elastane.SKU: YU343AA33EZA.