"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 hi-lo (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 poly-carbonate 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. The most incredible thing about this product is that it retails for only $12!