Nike Pro Hypercool technology Mesh in high-heat zones enhance ventilation Seamless shoulder construction Tiny pinholes in the front panel help enhance breathability Fits close to the body without compression Flatlock seams help reduce irritation Hit your workout with the Pro Hypercool Training Top from Nike. It's lighter and more breathable than it's predecessor. Train free from distraction with this durable, tough and performance-enhancing top that ensures you have the freedom to move. It's made from a lightweight fabric that features sweat-wicking fabric technology and strategically placed mesh ventilation zones to keep you as dry and as comfortable as possible. With a dropped back hem for extra coverage.