The ONIX Pickleball Owl RX Protective Eyewear glasses are built to withstand the rigors of competitive pickleball play and allow you to play safer. These safety glasses offer a removable customizable insert to add your vision prescription if you choose. The RX vision prescription is added to removable insert by your optometrist (this cost is extra and not included). The glasses are 99.9% UV sun protected and feature durable anti-scratch/anti-fog treated lenses. The vented lenses increase airflow. The set includes three color options clear, smoke (sunglass), and blue tint. Soft non-slip nose pieces add comfort and the co-molded soft ear pads provide a secure fit while you play. The Owl RX Eyewear glasses also include an adjustable elastic strap and a microfiber storage pouch. Lenses: Polycarbonate material; Frames: Nylon material; Nose piece & side arm padding: TRP/ Rubber. All eyewear models meet/exceed ASTM F803-11 impact standard. Dimensions: lens width 6.7cm, lens height 4.2cm, temple length 11.9cm, overall width 15cm. RX insert dimensions: lens width 4.4cm, lens height 2.7cm, overall insert width 13.4cm.