Womens Back Strap Sports Bra is made of interlock fabric 75% nylon 25% elastane, which is with good spring back. It offers ultimate comfort throughout your sessions. It's soft on the skin with quick-wicking properties. 
The fabric allows perspiration to pass out of the garment, keeping you cool and comfortable
Removable Cups are for better shaping and comfort. Back Closure is for more convenient wearing and taking off.