The Protos Integral Safety Glasses attach directly to the headband on the Protos Arborist helmet, ready to drop down when needed. The unique temple length and angle-adjustability of the frame ensures a perfect match to any size head. And, you can regulate the soft nose piece according to the nose width to ensure the glasses are back-ventilated to reduce fogging. The EN 166:2002 classification reaches the highest mechanical strength at extreme tempe­ratures applying to both to the visor and the temple connectors. Protos Integral Safety Glasses are extremely sturdy despite their lightweight. Protective UV filter according to EN 170:2003 as well as a sunscreen according to the standard EN 172:2002. Your eyes do not risk being harmed by the invisible dangers of the sunlight-clear lens for all-day use.