Native Hardtop XP Lens Kit - One Size - Grey - Native Hardtop XP Lens Kit. The Native Hardtop XP Lens Kit is a pair of replacement lenses for the Hardtop XP shades. Available in different colors, each has a purpose for different types of sunlight, even low light situations. If you're gonna be hard on your sunglasses, you might as well pack an extra pair for the ride home. Features of the Native Hardtop XP Lens Kit Includes a single pair of replacement Poly Crystal Carbonate lenses for the Native Hardtop XP sunglasses Optical-quality, impact-resistant lenses Blocks 100% of harmful UV light Eliminates glAre for sharp, clear vision with increased contrast and depth perception P. C.C.