These Defender eyeglasses from Caterpillar feature pop-on side shields for added safety. Crafted in durable, ANSI safety-rated metal, the rectangular frames boast a sturdy double bridge for extra strength. The accompanying side shields protect the eyes at the periphery, but cannot be removed once placed on the frames. The flexible spring hinges retain their initial adjustment and balance for a secure fit. The temple tips are coated in acetate for comfort behind the ears, and feature the signature CAT logo near the brow end for added appeal. Enjoy the union of style and performance in these impressive safety glasses from Caterpillar.