My foot fits very comfortably into the bed of the sandal. Well worth the money spent. It was simple for me to setup, easy to customize. Wonderful purchase and very comfy! Smooth and easy set up. The two Beoplays are strong contenders, the Denons have their charms especially coming from a company known more for generic black boxy stereo systems. Flat but supportive which is exactly what I needed. Yes, Im an adult that uses select baby-sensitive products, and challenge any baby to best me in manifesting bright red contact dermatitis, eczema, or psoriasis (especially in a pandemic, where as an essential worker I have to over-wash dry, cracked, hands with inflammation-triggering workplace soap). Shipping was pretty fast and Im happy with my purchase. I thought surely they would fit based on other reviews saying the upper is a bit loose.