Under Armour Sonic Women's Reversible Compression Sports Bra Compression - This ultra-tight, second-skin fit delivers a locked-in feel that keeps your muscles fresh and your recovery time fast. Super-Light HeatGear Fabric - Delivers superior coverage without weighing you down. Signature Moisture Transport System - Wicks sweat to keep you dry and light. Lightweight, 4-Way Stretch Construction - Improves mobility and maintains shape. Built for Mid-Impact Support - So you can stay fit and focused.