The ideal partner for any demanding activity, the Delta is engineered to enhance performance & provide total protection. Blocs hand finished frames utilise tough, pliant Karbon TX core injected frames, with flexible, lightweight performance offering the best in comfort & fit. The performance continues through the sports hinge & non-slip hypoallergenic temple tips; thats just the frames! The virtually indestructible Karbon 8 lens provides maximum UV protection, is distortion free & tinted to Category 3 for use in very bright conditions.