Made in the shade. These lightweight, scratch and shatter-resistant glasses are specifically designed to be as comfortable as they are fashionable. With Brimz, your shades are always there when you need them. Clip Brimz to the bill of your cap with the lenses forward and adjust the lenses until the frame just touches your forehead. Then just flip the shades down as needed. To remove the Brimz, slide the clip and the glasses forward until they slide off. The sunglasses also offer 100% UV protection. Each lens measures approximately 3"L x 1-3/4"W.