Support your core and improve blood flow on the top half of your body with the 2XU Men's Sleeveless Compression Top after all, your legs aren't the only things that benefit from compression!. . . . High power denier offers support to pectorals and deltoids 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. Sleeveless construction provides core body support without restricting movement. Graduated compression technology offers regulated pressure to deliver performance benefits during both exercise and recovery. 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.