With sweat-wicking mesh fabric, the Nike Mesh Daybreak Running Hat delivers a snug fit and breathability so you stay comfortable on a run. Dri-FIT fabric wicks sweat away to help keep you dry and comfortable. Allover mesh for breathability. Five-panel design with interior taping for comfort and durability. Adjustable strap at back for a snug, custom fit. Reflective details at front and back for visibility in low light.