Ideal for the gym or studio, The North Face T Tank battles sweat with VaporWick, and keeps you comfortable when you're working the weights, stretching, or on the go. . Recycled polyester and elastane knit jersey fabric. VaporWick moisture management technology wicks and moves perspiration from skin to outer fabric for evaporation you stay cool, dry, and comfortable during aerobic activity. Skinny racerback. Flatlock seams for smooth fit and nonchafing comfort. Slim fit. Seat length. Center back length: 27 in..