Heaven for sore plantar fascia
Unlike the other reviewer, I haven't had a problem with the o-rings coming off.  About those o-rings...I love using them to better dig into my foot.  I use the middle for promoting blood flow.  This is best used on hard floors or harder carpeting.  It's not the best outdoors on grass or dirt since it doesn't roll very well.  While a hard ball works great on the ground or in the hand, I don't find this product to be effective when I hold it in my hand...I believe the shape doesn't allow me to transfer enough force from my hand to my foot.  That said, it's obvious that this device is meant to be rolled on the ground, so I won't take away a star because of that, but thought it was something buyers should be aware of.<br /><br />UPDATE: Another year has passed, and I still haven't had a problem with the o-rings coming off.  My roller still looks brand new.  I don't use my roller as often anymore because my plantar fasciitis has gone away.  I would still highly recommend this to anyone with plantar fasciitis.  I keep mine under my desk so I can massage my feet while spending too many hours seated in front of my computer.<br /><br />If you're looking for a ball like I mentioned earlier, a wooden ball the size of a tennis ball would be ideal.  A pool table ball works, but is a little slippery.  Old style roller hockey pucks work too, but the newer pucks are bounce resistant and much too soft to really dig into sore muscles.
Rating: 5 stars