Virus Men's Energy Series Recovery and Endurance X-form Compression Top 82% Nylon, 18% Spandex Imported Ultra-wicking fabric construction keeps skin dry and comfortable Bioceramic fabric engineered for endurance and recovery Biomechanical x-form design reinforces good posture and form Compression pattern focuses compression's benefit, allows for range of motion and minimizes core restriction UPF 50 offers great protection from harmful UV rays