With a versatile frame design, Portal X can work for a variety of sports, yet it is also equally well suited off the field of play. O Matter frame material provides durability and all-day comfort to keep up with life on-the-go while unobtainium on the inside of the earsocks and nosepads increase grip when wet to help keep the eyewear securely in place. Oakley products sold by authorized sellers, like Amazon.com, are eligible for all manufacturer warranties and guarantees. Visit the Oakley shop by clicking on the brand link above to shop the entire Oakley assortment.