The crème de la crème of Pit Vipers, the Monster Bull 2000s is the premium model.

These sunglasses feature all the customization, Goldilocks Fit Technology (not too big, not too small), a stiffer, more durable frame and the clearest lenses ever. Non-polarizing 2000s also feature a Z87+ safety rating. 

Features:
• Adjustable by hinges on the frame
• Adjustable nose bridge
• UV protection: 100 %
• Light transmission: 14.2 %
• Look Thru Color: Blue
• Frame width: 5.66 in/144 mm
• Frame height: 2.34 in/59.5 mm
• Nose opening: 1.31 in/33.5 mm
• Including case, glasses pouch, retaining clip