Unsinkable® sunglasses are made from a unique frame material called VaporLite™ which has the look & feel of ordinary sunglasses but are 20% lighter, allowing them to float. Now you can get out on the water and go paddling, surfing, fishing, kayaking or just relaxing knowing that your new shades are Lighter than Water™. And by the way, if they happen to float away on you, don't worry because you're covered by the Lifetime + Loss™ warranty.