Bushwhacer amber see thru scope covers - Quake Bushwhacker Optic Covers Amber See-Thru Size 4 Fits 1.40" - 1.60" / 35.6 - 40.6 mm 12242-5

These covers fit well, they pop-up at just the right amount of pressure, are easy to close, and are the improved version which flips over to the side (270 degrees). Lens is light amber, near what optometrist calls canary yellow, which makes for enhanced contrast in low light. They do not have the problem of newer Butler Creeks of popping up on their own. The stretchable rubber outside needs to be put on with some care, and pressure, and yields a tight fit--they will not slide off. Between these an the new Hawkes, we finally again have a good option for amber see through flip up caps. Time will tell how well the flip-hinge holds up with use. But so far, I like and recommen them.