The Cressi (R) Big Eyes Evolution Mask features a newly designed skirt that is exceptionally comfortable and non-marking, even during prolonged use. This revolutionary design has three interior silicone bridges that enhances the fit and feel while underwater. Visibility is increased by 25% thanks to the inverted drop lens shape that is as close to the pupils as possible and can be changed out with individualized prescription lenses. FEATURES: High seal materials are soft and comfortable New skirt design allows it to rest of face with no marking Internal ribs stiffen the parts of the mask that are most stressed Raked lenses in an inverted drop shape brought as close to the pupils as possible, increasing visibility by 25% Reduced headband thickness makes it practically invisible when worn Designed to take prescription lenses 100% silicone skirt with tempered glass lenses Angled lenses for maximum vision Designed and created using innovative and patented manufacturing technology Manufacturer's 2-year warranty Model: DS3360, DS3365 For additional information relating to the Manufacturer's Warranty, please contact 201-594-1450.