They fit perfect and as expected until this last winter when they got muddy and I needed to wash them. To compare I previously had a pair of Sony WF-1000XM3s which are at or near the top of a lot of youtube earbud reviews. I am not sure I would recommend for mountain biking because of the vibrations. The added brush head is awesome for exfoliating and such a great bonus for the price! Perfect for restring beads )This time around, however, the shoes seem flimsy and of much inferior quality. My parents love the shoes If you’re not using the mic, then these covers are great. 5>>Front to back, my foot measures 10. Nice soft smell.