Good quality, sturdy, and nonslippery. They are small enough to fit a middle schooler, I mean I have a tiny head and I needed to extend each side about 1-2 cms. I have no idea if they are an appropriate size but we got them when she was about 18 months (now 20 months) and the size 7 fits well. Charging time is 4 hours. Im sure I can make it work, but its supposed to work on its own, without the buyer having to intervene with head-scratching, frustration, and wood-glue. Otherwise, good shoe! It is difficult to imagine being able to purchase water sandals for about 20 bucks. For MDR 1000x its different, its weight is enough to make you feel it on your head, but there is no pressure from it. Estou MUITO satisfeito. Phone on mount is rock solid.