Edit: Anker Customer Support reached out to me regarding this issue and rectified this situation. I thought a bit pricey but you gotta pay for that back in the day look Even doing that, they made it for a year pulling double duty as my river kayaking/fishing shoes and casual everyday stompers. I exercise for about an hour every day doing cross training and cardio. That way you can maximize the space. Would recommend unreservedly. I will adjust with heel inserts or sole inserts. I use them while I am working out and the wireless quality is great. Make sure you order 1/2 size larger than your largest shoe size. The installation sheet recommends no more than 70 Lbs.