All Gill sunglasses are floatable, so if you drop them, all is not lost. The Reflex is made from an advanced low density polymer with natural buoyancy and features 100% UV 400 protection, blocking 100% of harmful UVA, UVB and UVC radiation.. The Hydrophobic outer coating sheds water and reduces salt residue for clear vision. And with Oleophobic technology applied to the inside face this repels fingerprints, sun lotion and skin oils.