The inner layer presenting the case and earbuds is a high density polymer akin to rubber. There is still a little rounding here, but it’s pretty good overall. Price and comfort were the deciding factors. 5 year old, and they have room to grow. I’m skeptical every time I order something for my Apple products that are not directly from Apple. Please show your appreciation by clicking the "helpful" below when it asks if the review is helpful! Indentation near the headband is not needed. And super crispy bright white. I havent work flip flops for years because the hurt my feet. I went up a whole size because these shoes have exactly zero support and I needed space for orthotics.