Review on Yodo Flip-Up Clip-On Polarized Sunglasses For Men And Women - Ideal For Driving, Fishing, And Outdoor Sports, Fits Over Prescription Glasses by Jose Mcdaniel

The problem is that they give you the lens size, but in reality all of that lens is not available to cover your glasses because the flip up mechanism is so bulky that it takes up a few millimeters on top so even though the size indicated it would cover my lens by at least an extra millimeter, it falls way short of that coverage and thus looks silly. The brand that used to be available at Walmart has a less bulky mechanism and thus provides full coverage for the same size lens. The next size up will look odd I think as it's way too big, in addition the bulky mechanism just doesn't sit well on my glasses.