Locked-in UA Compression fit increases muscle power & decreases recovery time; Soft, super-breathable construction delivers maximum comfort & durability; Signature Moisture Transport System wicks sweat to keep you dry & light; Lightweight, 4-way stretch fabrication improves range of motion & dries faster; Smooth flatlock seams prevent chafing; Wide waistband delivers just the right amount of coverage; 2" interior waistband pocket to stash your stuff – perfect for holding fitness trackers; 87% POLYESTER, 13% ELASTANE