I cannot recommend this in high theft threat areas due to its numerous vulnerabilities. It has a nice smooth-gel grippy side that doesnt scratch the bike, as far as Ive seen, and is way easier to use to keep wheel stabilized on bike rack. I fully expect they will need some breaking in to wear for long times with no socks, but so far, they have much more support than any other ballet flat Ive had. I think the best way to do this is make repeated scores at its base with a utility knife blade, and after it has enough scores, get some pliers out and rotate the pin until it breaks. I just wish there was a matte black option. Since getting these Ive had the most fun playing music for a long time. You get a nice cable compartment which also can be moved. Although, they do pretty well in blocking ambient noise. You can’t beat the price for good quality sound. its normal, bass, or treble.