Hardly worth mentioning. These saws have changed and I initially order the wrong set. It helps to cover the non-adhesive side of bottom protector with clear tape to line it up more easily. Pese a todo lo incluyo en ventajas porque no he tenido problema alguno, simplemente es cuestión de gustos a la hora de cómo se gestionan los dispositivos. I had a hard time finding a gym slide that would fit (size 13). Its nice to finally see a wireless charger in WHITE because many wireless chargers now only come in black. I was nervous to order this because it specified that it was “narrow” which my foot is not. From the side, front and back, the Rokkit and certain versions of the Lulu both looked like they fit the bill. They have held up really well and this guy is hard on his slippers. wanna know what it is? Only one way to fund out 😉