I wear 7 in sneakers. Was real easy to install I’m very pleased and I typically wear an 8. I am hoping they loosen as I wear them. For on-the-go everything about this headphone is perfect in that its built like a tank, the ergonomics are great as the headphones conform perfectly to your head, the low-end bass helps to drown out and isolate the sound from outside, the vents on the headphone make headphone sound a bit more airy and spacious, and the wireless nature is liberating. I Will post some pictures. too brittle. Sound quality sounds a little tin like with little bass (okay for lower volume), but battery life is disappointing already into 6 weeks of owning and I worry the battery life will continue to decrease. Product broke after one week of use. No more buying boots or shoes every 3-6 months!