Design for Kids Teen - The polarized clip-on sunglasses specially design for kids, big kids, teenager who wear glasses, size not as big as the adult clip on shades are. These clip on sunglasses are suitable for most glasses frame, such as metal frame, plastic frames, rimless glasses, half-rim glasses or full-rim glasses. Products Size -Lens width: 48mm (1.89 inches); Lens height: 45mm (1.77 inches); Bridge width: 17mm (0.67 inches); Frame width: 132mm (5.31 inches), We recommend that you might measure the size of the glasses frame before purchase, ensure that you can buy the perfect fit in the first time. If you not sure about the size, please refer to our size guide picture. Classic Polarised & UV400 Protection Lenses - The polarised clip on lens can filter out sunlight reflected glare, restore true color, eliminate reflected light and scattered light, can protect kids eyes against UV damage and keeping their eyes healthy. High Quality Material - This clip on sunglasses is made from high quality polarised lenses, durable metal clip with soft rubber tip to protect eyeglass's lenses from scratches; clips are sturdy, prevent the clip on sunglasses from falling off while kids moving; and it is super lightweight and durable, ensure no pressure for the nose when wearing it. Practical and Convenience - Easy to use! Just need clip onto your existing eyeglasses. Great for most kinds of outdoor activities and daily use, such as Riding, Running, Cycling, Fishing, Traveling, Skiing and Climbing, etc.