Key features thumbholes keep distracting sleeves under the thumb park that zipper in the zipper garage before it scratches your chin stash your valuables in secure zippered pockets always be prepared with emergency hair ties double zippers give you room to move and breathe chafe-resistant flat seams so you don't get rubbed the wrong way hide from the elements inside the high collar Tech specs designed for: to-and-from fabric(s): luon® properties: four-way stretch, moisture wicking, preshrunk, chafe resistant, breathable fit: loose length: bum covering