Hayabusa Metaru 47 Silver Rashguard Short Sleeve Shirt CUTTING EDGE FABRIC TECHNOLOGY - Crafted from Hayabusas exclusive AG compression fabric, the Metaru 47 is unmatched in comfort, performance, and flexibility ANTI-MICROBIAL - Powered by X-Static XT2 pure silver, a natural anti-microbial technology shown to provide superior anti-odor performance for the lifetime of the garment COMFORT & DURABILITY - The Metaru 47 features flatlock stitching to prevent chafing and fiber-fused graphics for uncompromised durability SUPERIOR PROTECTION - Hayabusas rash guards are designed to protect against cuts, scrapes, and rashes, as well as keep your body dry and muscles warm IBJJF CERTIFIED - 100% compliant with the International Brazilian Jiu-Jitsu Federation (IBJJF) and competition regulations, which require apparel colors to match the belt of the athlete