I bought the red ones and four pairs were enough to cover my 360 controllers, PS3 controller and Wii U gamepad. They all fit perfectly and I have a feeling they will greatly increase the lifespan of each joystick (I've also tried it on my steam controller joystick for science and it's comfortable and perfect too). It can be a little tricky to get them right and it may take a few tries. Flipping them inside out, centering them exactly on the joystick, and then deploying them on all sides at once is a quick and easy way to do this. They should never come off if you put them on properly, unless you take them off on purpose. Will definitely be buying more for the rest of my controllers
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