Fit for performance, designed to stand out. The JUNK Performance Skull Cap is a lightweight, four-way stretch layer that wicks sweat, blocks the sun, and stays put through every rep, ride, and run. Features Stays Put The double-layer band delivers gentle compression that holds the cap in place. Sweat-Wicking Performance Moisture-wicking fabric pulls sweat away from the skin fast, keeping you cool and dry. Helmet Compatible Low-profile, single-ply crown construction fits comfortably under football, cycling, ski, or work helmets. UPF 50 Protection Built-in sun protection means you&';re covered on every outdoor session. Flatlock Comfort Seams Smooth, low-profile stitching prevents friction and bulk.