Four-way stretch ultra-light fabric for ease of movement 1/4 Zip design Zippered chest storage pocket Comfortable full cut Quick-drying fabric Lightweight Performance. The Tec Stalker series features lightweight, breathable, moisture-wicking fabric that moves sweat away from your body while drying quickly. This is the next-to-skin layer that you want on everyday hot or cold. The built-in all-over stretch offers nonrestrictive freedom of movement. Dry and comfortable the Tec Stalker series will keep you operating at peak performance