Boost more than just your confidence with the SPANX® BoostUp Cropped Square Neck Shelf Tank. Crafted from our breathable, sweat-wicking, sleek and sporty FlexAppeal performance fabric—plus 4-way stretch for maximum comfort. This cropped active tank features a built-in shelf bra with removable cups for customizable support. Designed for both high-performance and style, this tank is made to move.