The Women's Comp Sleeveless is made of Endurexx fabric that molds to the curves of the body perfectly providing maximum muscle compression and excellent support. Chlorine resistant so it will maintain integrity if training in a pool. Hydrodynamic flatlock seams under the chest help water slide. FABRICS: Endurexx, Mesh. DETAILS: 15"/38 cm invisible zip. 2 back pockets. Hydrodynamic flatlock seams under chest.