Bloc Stoat XR Sunglasses, Lenses provide 100% UV protection, BLOC sports frames utilise tough & compliant TR90 frames, The fit of the h&-finished frames are exceptional, With Karbon 8 lens technology, our optical class 1 lenses are made from super tough, high impact material, Rigorous testing ensures that our products exceed European Standard BS EN 1836:2005, This original Bloc sports performance frame has stood the test of time. Offering a fantastic fit with great peripheral vision. Packed with BLOC heritage.