From the Bog Dog team:
A must-have essential in any athlete’s training arsenal, the Skyform Half Zip delivers a versatile layering piece with soft, quick-dry jersey. Designed with an elongated zipper to vent on the fly, this slim-fit silhouette lives up to the hype with an anti-chafe zipper guard, sleek thumbhole construction, and stealthy side zip pocket designed for stashing your keys or card.