The Zoot Men's Performance Tri Mesh Top is an asset to you while working on winning your Tri. It's light, it's fresh, and it's got some style to it! If you're an athletes looking for maximum ventilation you will appreciate the men's Performance Tri Mesh Top. The full separating zipper allows you to regulate your temp on the fly while Endura upper back and shoulder panels provides UPF 50+ sun protection.