DetailsZoot Men's Apparel Size Chart Zoot's most popular triathlon tank top is back and better than ever. The men's Performance Tri Tank blends essential protection from the sun, next-to-skin comfort, and enhance breathability. Innovative construction for ultimate comfort and support, and adequate side stash pockets, the men's Performance Tri Tank will quickly become your favorite piece of triathlon apparel. Performance Endura fabric keeps you dry and comfortable. Enjoy a dropped back hem for enhanced coverage and back pockets for adequate nutrition storage.