Finally, a UV Swim Mask that will stay put! Our mom testers love the kid friendly convenience of the adjustment buckles which allow even small children to easily adjust the straps themselves. These are the most comfortable swim masks we have found! The soft, hypoallergenic silicone padding provides an exceptional fit and keeps water out to prevent irritated eyes. Our UV Aquasphere swim masks feature 100% UVA and UVB protection. The lightweight patented Plexisol ® lens provides superior 180 degree distortion-free visibility and the anti-fog and scratch-resistant coating keeps your child’s visibility crystal clear, allowing for hours of swimming fun! Designed primarily for children 3 and up, but the frame allows it to fit a variety of little swimmers and face sizes. We have tried many a swim mask and Aquasphere is simply the best.