Black Sheep Men's Fly Singlet newbalance with a design to enhance

with a design to enhance breathability for long days on the trail

Caffeine has been shown to increase alertness and reduce perceived effort

CMEVA midsole

Individual anatomic toe sleeves form a thin anti-blister membrane between toes to eliminate skin-against-skin friction Nuwool blend of merino wool

Black Sheep Men's Fly Singlet newbalance with a design to enhanceThe lightest singlet you'll ever wear, weighing less than 80 grams. Made with FlyMesh, an ultra lightweight Italian fabric milled in a unique pattern to minimize surface area and maximize airflow. Seamless finishing provides reduced chafing and enhanced durability. Designed to be raced in.