1. Safe Tempered-Glass LensThis swim goggles chooses the ultra clear thickened tempered glass with a safety film to withstand deep water pressure for all types of diving or swimming. Scratching resist lens provides the clearer view under water. This kids diving goggles is with thick tempered glass lens, but please Don't toss them down on the tile floor, Don't jump into water with the goggles, Don't scratch the glass with sharp objects. 2. 180Panoramic View and Anti-fogAdvanced lens shape design and thickened tempered glass with latest anti-fog treatment means you'll have a crystal clear underwater experience without blurring or distortion. One piece glass design enables better and wider vision under water. 3. Soft Silicone RubberLeak proof, comfort seal skirt and strap adopt soft silicone, which molds to the shape of your face for comfortable fit and watertight seal. No more leak or discomfort. Soft liquid silicone face skirt comfortably fits a wide variety of boys and girls, reduces face water pressure, seals on kids' face well without worrying about water leakage when scuba diving snorkeling or swimming. 4. Easy Headstrap AdjustmentThe water goggles fit a range of 5-15 years old children' faces. The straps of scuba diving goggles can be adjusted by easily pressing goggless' button buckle and the buckle will hold the strap securely in place without creeping down in the water. Tips to avoid the leakage: Tighten the goggles and you can feel that the silicone skirt is fully absorbed on your face. 5. Swim GogglesSuitable for snorkeling and leisure swimming. You can buy with confidence.