For $10 or less these will do a few things: give you more leverage on your switch and handheld mode, work as a joy-con pro controller grip, and take up less space during travel then a satisfye grip or something similar to that.They are a little bit flimsy but overall they work pretty well and they make the switch a lot more comfortable to hold and handheld mode combined with the OLED it's perfect. Can be slotted together to be used as joy-con pro controller which is a nice feature however I don't particularly use joycons like this very often so I don't know how much mileage I'll get out of that but the nice feature of that is that it will fit in a travel case that I have specifically for that grip so that's a win-win too. It's the exact same size as the Nintendo joy-con pro controller grip holder but allows you to take it apart and then put it on the switch.The biggest thing that no one's answered on here so so far is whether or not it will charge the joycons while it's connected to the switch and handheld mode it's not the same as normal handheld mode but it does charge them as well it shows them as connected via Bluetooth instead of disconnected to the switch but it charge them charges them at the same time so I'm not sure exactly how to explain it but my joints have not died connected to this at all but do not show up as connected in the screen see the above screenshot for clarification.If you're thinking about by this buy it works it's pretty good and it's a good value.Works great and grandkids are happyGrip is pretty good (took a little while to get use to) stays in place when connected. Taking it apart & putting it back together is pretty easy, putting joy-sticks controllers in it is a little more of a push then the regular 1, and hooking it on to the switch is pretty easy (stays on , easy to grip on to, and wont come off unless u push the button on it). P.S. You can hook it on to other colored versions of it!Pretty easy to use. Locks and hold the switch Consol pretty good, also does it for the joysticks, and the button in the back to separate it works pretty fine.This controller is a crazy amount of BULKY like the classic Xbox controller. It has a light that stays on as long as it's plugged in. The analog stick is a little sticky, but that's probably because it's brand new. Other than that, it works great and Kupo!No es rojo rojo, es rojo como los joycon. El plastico se ve bien pero lo que no me gusto que no se sujetan por el carril de Switch sino por la parte de arriba rayando la consola, ademas ya puestos quedan un poco endebles