Superbly tapered and styled for outdoor adventures like hiking, backpacking and trail running, the Outdoor Research Mesa Tank features a highly breathable Dri-Release fabric to help keep you dry and comfortable throughout the hottest weeks of the year. A permanent FreshGuard odor neutralization finish in the Mesa Tank minimizes odors and inhibits the growth of odor-causing bacteria. The athlete-oriented tapered cut fits well beneath a climbing harness or backpack and doesn't bunch, bag or sag like relaxed-fit technical tops. If you're looking for the same design with stretch spaghetti straps, check out the Outdoor Research Laguna Tank.