Need something to keep sweat and sun off your head? These KMUTZENS skull caps are perfect. They're super lightweight and made from a soft, breathable mesh polyester that dries really fast. Great to wear under your bike, motorbike, or work helmet to soak up sweat and keep things comfy. Or just wear it on its own for running, gardening, or hiking. The tie-back lets you adjust it to fit most heads (54-59cm / 21-23 inches), and it has a little flap to cover your neck from sunburn. Comes in a handy 2-pack, folds up tiny to toss in your bag. Easy to wash, too. A simple, affordable essential for anyone who's active outdoors.