The ankle straps are loose and no matter how tight I get them, they end up sliding under my heels. When I connected my Sennheiser HD1 headphones to Monolith Liquid Spark Amplifier, which is in turn connected to Topping NX4 portable DAC, I could clearly hear the difference. The platform gives them more cushion than the classics, etc. They are too long and narrow. )For other parents whose kids love these Merrell Trail Chaser shoes, I can recommend this particular style for boots that might fit the same child:Merrell Chameleon 7 Access Mid Waterproof Boot Big Kid 5 BlackI bought the boots a half size larger to allow for thick winter socks. I wore them around Disneyland and universal studios, so the are obviously very comfortable and good for walking. Durability: As I?ve said I?ve only had it for 2 days so I can only comment on what I?ve felt/seen so far. I love it I weigh 150 and I ordered size medium and it fits perfect not to tight not to loose. It really is an awesome product, comes with a 30 w charger which is probably worth the 46$ in itself. I went home to check to see if Amazon sold them and they did.