MOST COMPRESSION GARMENTS ON THE MARKET TODAY ARE DESIGNED FOR ATHLETES THAT WEAR THEM FOR ONLY A FEW HOURS AT A TIME. OUR LAW ENFORCEMENT (L.E.) TIGHT CREW PROVES ITSELF SUPERIOR TO THE COMPETITION WITH A SEAMLESS SLEEVE CONSTRUCTION AND MESH GUSSET UNDER THE ARM. THESE KEY INNOVATIVE FEATURES OFFER YOU AN ENTIRE WORKDAY'S WORTH OF INCREASED COMFORT, MOBILITY, AND BREATHABILITY. FEATURES: 80% polyester, 20% Lycra® spandex, Dri-X-treme® wicking for quick drying and increased comfort, mesh fabric under arms for highest breathability, heat transfer label at back neck eliminates tag irritation, raglan "saddle shoulder" construction, anti-microbial, anti-static.