Review on Bike Frame Protection: Juscycling Rubber Sleeves For Shifter And Brake Cables - 4 Pack, 3 Color Options by Joseph Mathis

Cable bumpers or frame protectors tend to slide around on the cable, even if they are sized so that they have to stretch a little to allow the cable to pass through. This product, however does not grab onto the cable *at all*. On the downtube shifting cables, they immediately slide to the bottom of the cable (worthless there) and then fall off.On the brake cables, they don't fall off, but they still slide around with alacrity.Avoid these if you want bumpers that stay on the cables and stay put where you want them on the cable.