Ventilation and storage—the extra-long zipper on this pullover allows you to cool off with a quick zip and built-in pockets hold your running necessities. It’s made from cool-feeling, technical Luxtreme® fabric with Mesh fabric panels. luxtreme® Is sweat-wicking, four-way stretch, and engineered not to shrink features Designed for: Run Lycra®: Added Lycra® fibre for shape retention Zippered pocket: Stash your stuff in this discreet seam pocket Thumbholes: Help keep your sleeves in place and hands warm Tight fit: Lets you move without restriction