This device may cause a love-hate relationship because it works, lol. It is very sturdy and I find it gives a much better stretch than a conventional ramp style box that I used in PT. Be SURE to wear shoes as instructed! I pronate and have high arches so I have been working on plantar fasciitis issues. This gadget stretches my feet and my calves which is precisely what you need. I began with 3 sessions a day doing each of the two recommended stretches 3 times holding for 30 seconds. I made a point to get the dual style because balance is important in the body even though in my case only my right foot was acting up. This was a wise decision. I know that this is a bit pricey but it will last me a lifetime and is now a permanent part of my home gym.