The 2XU Gym Singlet is anatomically engineered to offer the ultimate in moisture management. With SMD ( Super Micro Denier ) Cool graded fabric, you have a mechanical moisture management system with exceptional thermo-regulation built into your garment. Add in SMD Silver and you also have permanent antibacterial protection. With a wider shoulder and a loose fit, this versatile singlet is perfect for the endurance and team athletes on the course, field, or gym and is also a terrific piece for crossfit.