Made of premium polyester microfiber, comfy and soft to wear, breaths well, Lightweight and strong stretchy, dry quickly,moisture-wicking. Features with strong stretchy adjustable straps fit effortlessly for your helmet or baseball cap, machine washable and does not shrink. Easy to use, easy to wear, the functional design fit for all adults,sun-UV protection in summer and keep warm under hat in winter. Ideal for all outdoor activities – hiking, climbing, running, bike riding, motorcycle riding, horseback riding, boating, skating, etc. Please feel free to contact us if you need other styles or sizes. Your logo is welcome.