For the lightest (and most sun protective, with built-in UPF 50+) and most breathable in outdoor running apparel, the Men's Saucony Kinvara Short Sleeve Performance Shirt is high up on the list. Made out of a super-light, moisture-wicking fabric, this short sleeve running tee is tops for ventilation and lightweight running adventures.
Saucony Men's Kinvara Short Sleeve Performance Shirt Photo
Black/ Livewire and Navy/ Livewire.
Available sizes, while supplies last, include size small, size medium, size large, size extra large and size extra extra large: s, m, l, xl, xxl.