The straps sofar have worked extremely well. Easy to adjust to get a proper fit and easy to step in and out of. I havn't slipped out of them, which was a big problem with my boots and clips/straps and they hold my feet securely on the pedals when I resist to slowdown. I am really happy woth the results as powergrips were the perfect solution to my cold feet problem, but at $50+ abit much for 2 bikes.