Fixgear Mens Womens Running Compression Shirt Base Layer Tight Black S~4XL Patented FIXGEAR Energy Maintenance system accelerates your blood flow to deliver more oxygen to your active muscles, reduces lactic acid build-up, and enhances circulation Lightweight, quick drying, flexible, durable, naturally antibacterial and water wicking. Breathable fabric helps maintain an optimal body temperature in all warm or cool conditions Controlled compression and unrestricted movement to help you avoid the muscle damage that you sustain while at play but only notice when you cool down reducing post-exercise muscle soreness. Odour-free, permanent antimicrobial treatment and UPF 50+ provides all round protection. Patented FIXGEAR (Friction Resistant material) Optimal 80% Polyester / 20% Spandex blend in a comfort knit helps you perform at your ultimate best offering 360 degree full stretch for greater muscle mobility. Invisible seaming construction means no chaffing. Machine washable fabric that performs and lasts.