Triathlon apparel is typically best left to those who live and breathe triathlon. Sure, a cycling manufacturer is able to make an exceptional cycling jersey, but do you want to run and swim in a cycling jersey We didn't think so. For the construction of Carbon Men's Tank, TYR pulled out all of the stops. In construction the body, TYR incorporated a blend of nylon and spandex. Why these materials Well, it all comes down to three key components: moisture management, comfort, and stretch. The nylon fibers of the fabric lend themselves to first two of these characteristics, as the material is lightweight and soft to the touch. Accordingly, it pulls moisture away from the skin to the quick drying surface of the material. As a result, you not only benefit from a dry, protective layer, but your skin also remains dry and free from moisture induced chafing. Meanwhile, the spandex provides a four way stretch to the material, enabling a complete freedom of movement within the top. Additionally, this allowed stretch enables the material to follow your diverse movements, preventing the top from resisting them. Thus, friction is nearly eliminated, bolstering the overall comfort of the top. TYR also included dedicated inserts along the side panels in order to increase stretch, ventilation, and moisture management. These panels have been constructed from a blend of nylon, polyester, Lycra, and carbon mesh. In terms of fit, TYR cut this top with racing in mind. Accordingly, it possesses a next to skin fit that's free from any wind flapping. Additionally, the armholes have been inset from the shoulder, allowing a complete freedom movement for the arms. You'll also find that this design eliminates any bunching, binding, or pinching during the locomotion of your swim or run, while the front zipper locks wherever you leave it and the rear pocket holds gels or a water bottle. And, like all TYR tri tops, the Carbon has UPF 50 sun protection, so you won't get cooked while you swim...