ApplicableSpecial designed kids ski goggles for 3-14 years old boys girls. Lens width& height: 15 x 7.3cm/5.9 x 2.87 inch. Helmet CompatibleAdjustable elastic strap ensures great helmet compatibility with kid's ski helmets. OTG design that lets kids wear their glasses under the goggles. Durable TPU FrameFlexible urethane TPU frame is soft but very tough, which can well protect the goggles and ensure your kid's eyes won't get hurt even the lenses are struck. Double-layer LensDouble-layer lens with high performance anti-fog coating protect against fogging, and block strong sunlight in bright conditions, scratch resistant, impact resistance. Ventilation SystemThe smooth air-flow system on goggles brings fresh air and exhausts moisture quickly and effectively.