Hercules frames are made of very resilient nylon as demonstrated in the picture above. The wrap around design ensures they stay put, leaving you to concentrate on your sport. Shatterproof Polycarbonate Lenses are standard as with all our range so to afford maximum protection if wearing an open faced helmet. (Please note the items shown being flexed is for illustrative purposes only as the actual item has Black tinted lenses and not yellow.) Fed up of breaking your glasses? Then these could be the answer. We asked Global Visions president Richard Wright if Hercules were indestructible. “We don’t know he said,” “but we haven’t found anyone yet who can break ’em! We stepped on them, stretched them out straight while pulling on them as hard as we could, even twisting them; then we ran over them with a forklift (not once but twice) and they didn’t break! The lenses didn’t even come out of the frame!” The frames are made of resilient high-grade nylon. The Polycarbonate lenses are so tough that when shot with a 1/4″ steel ball (at over 100 mph) only a dimple was left in the lens. Hercules glasses are specially designed for easy insertion whilst wearing your helmet. A Free Micro-Fibre Storage/Cleaning pouch is also included.