EnChroma Grayson is a sophisticated, classically square frame fitted with Cx1 Indoor colour blind lenses intended for indoor lighting conditions. Grayson features a matte black finish with distinctive detailing of two accent posts for a smart look. Molded hinges, contoured temple ends, and a universal and well shaped saddle bridge ensure an easy fit. Made from a durable, lightweight, BPA-free flexible material, it will hold its shape for the life of your glasses. 100% UV protection. Case included. Rx capable. Medium/small frame size ideal for teens and adults: 51-22-145