The BLOC Delta X4 Sunglasses maximise comfort whilst protecting from extreme glare. The fully optimised XTR Karbon8 Category 3 lenses shield from both UVA and UVB damage whilst granting a clear, distortion free view. The lightweight frames and comfortable nose pads ensure these glasses are ready for any adventure.XTR Karbon8 Category 3 lenses - maximum UVA and UVB protection, distortion free and impact resistantKARBON TX frames - lightweight and designed for greater comfortSports hinges - increased strength and performanceHypoallergenic nosepads - with hypoallergenic temple tipsMetal branding