Its frustrating sometimes, but still something Im able to manage. I really wish these were more adjustable. )The battery lasts a decent amount of time, too. This doesnt happen often, but sometimes when I am running with them on, there is a small rattle inside. Balanced signature that works well with multiple genres. Ive used the polisher a few times and works well. My recommendation is to buy these only from Amazon, not from other sellers on Amazon. I put this together myself. I bought these as "house shoes". Great pair of flip flops by vionic.