Whale MM-6100 Professional Mirrored Wide-Vision Goggle Swim Mask with Long Lasting Anti-Fog UV Protection Mirrored Coating Swimming Goggles Mirrored curve lens with wider vision. Great suction on your face Dural long-lasting anti-fog can bear rubbing Soft silicone skirt provide comfortable It fit comfortably around your eye sockets and don't have to create too much pressure to keep the water out. Because the gaskets around the eyepieces are thick and curved in a way that will probably fit most faces Fast-fit head strap system &High-class silicon rubber eyecup has high suction capabilities,which will keep water out of your goggles and assure you 100% waterproof The mirrored lenses are made of high quality polycarbonate with 100% UV protection and they have Anti-fog technology, which makes me see clearly in water. The silicon rubber eye cup has high suction capabilities, which keep water out of my goggles