The innovative proprietary design of the T-Cap includes custom designed sunglasses that slide through a slit in the bill when needed and back up when not needed anymore ! This model includes a blank black cap with a pair of polarized grey lens sunglasses. Cap part: Adult size TCap, Black, Blank, one size fits most thanks to a convenient Velcro closure at the back of the cap. This cap does not have any logo so that you can get your very own logo embroidered or just wear it plain. Made of 98% cotton and 2% spandex. Sunglasses part: Only the highest quality materials have been used in the manufacturing process. Frames : made of lightweight and durable Polycarbonate and Nylon. Lenses : Polarized, made with impact and scratch resistant Polycarbonate similar to the ones used for high quality sport sunglasses. They offer 100% UV protection. A system of sliding and rotating temples allows you to position the sunglasses closer or away from your face for that perfect fit. The sunglasses unique design will give you more protection than regular sunglasses. No itching where the sunglasses touch the nose anymore ! You decide if you want the sunglasses to touch your face or not. The lenses offer 100% UV protection and are made with impact and scratch resistant polycarbonate. The T Cap is simply unique and practical !