Edit #2: It's been many months and they're still going strong. I also bought a PS4 and while they're best for Xbox, they're also great for PS4 (just not as handy). Also works well with Switch Controller and Switch Pro Controller. The Switch Gamecube controller remains technically operational as long as it is balanced. I bought 8 pieces and was happy with them. Pros: - Comes with 4 large square pieces of very sticky, high quality double-sided 3M tape. - Supplied with 2 cable holders with tape. - Perfect fit for Xbox One controller. No wobbling - Fits well enough for the PS4 controller, they don't fall off - Looks very nice and smooth. - Made from high quality thick/heavy plastic Cons: - The PS4 controller fits well but has little left/right clearance. Nevertheless, they do not fall off! I use these for my PS4 controllers and buy others for them. Additional Notes: Although this holder is not designed for the Switch Gamecube controller, it can still be balanced on it as shown in one of my pictures.