Oxford Tank Saver Tank Knee Pad - Clear From  £14.24

I have used these tank pads previously as I like a pad that doesn't clutter or distract from the lines and paint color on my bikes tanks. These clear pads for me are perfect in the fact they protect your precious tank from wear and tear but are almost invisible. Perfect.

It's much smaller than I expected, so from a functional perspective, it needs to be placed just so to protect the tank from the range of motion your knees will have. It will do for now.

My bike is white, and the shading isn't very attractive. Would probably look better on a darker color