These new ones are comfortable but have nubs that are less raised and more part of the insole. They were willing to give me a full refund because the strap broke. It has a cotton tag on it to help you get to the accessories below. He’s got a smaller head, mines a bit larger and the adjustable head band fits us both. Seriously, I dont even have too chubby feet either and I wore the thinnest pair of socks I own. The description says it will fit AirPod Pros. I have been impressed with the sound and comfort of the bone conduction. (who knows with a teenager) In any case, I am enthusiastically planning to buy another pair for each of my sons. The silicone attachment to fit in your ear does hold the device in place, but it can slip out easily enough. I don’t think they look cheap like other imitations and even with all I’ve mentioned, I would recommend these boots as a nice alternative to spending $200+