Powerful yet lightweight, the 2XU Men's Vented Long Sleeve Compression Top is engineered to enhance posture for activities with upper body demands such as crossfit, weight lifting, running, rowing, and racquetball sports. . High power PWX FLEX fabric offers support to pectorals, deltoids, biceps, triceps, forearms, and core stomach muscles to reduce muscle fatigue and damage. PWX FLEX features high grade elastomeric yarns and a superior grade knit structure to allow 360deg stretch for optimal flexibility and movement. Graduated compression increases blood circulation for improved recovery and reduced post exercise muscle stiffness. Raglan sleeve construction allows for unrestricted movement. Powermesh panels provide greater breathability in key regions. Can be worn discreetly under competition uniforms or on its own flatlock seams reduce the risk of chafing. UPF50 sun protection keeps harmful UV rays at bay. Moisture wicking, antibacterial fabric keeps you cool and dry while resisting odors.