OK, I am abashed. I wrote two 5-star reviews of Chaco's sandals in the last couple of years and now I am back to Teva's. So why? First the sizing. Chaco's US9 is slightly small for me and US10 is slightly big. I made do with US9. Was quite happy in fact, until my bone spur returned--out of the blue. Nothing special happened. Just went for a walk and the pain in the heel was so severe I could barely walk for a couple of days. So bad that I remembered Teva's 'shocpad'. I never thought it was just a gimmick but I never paid it much attention either. Now I decided to pull out my old Dozers--not really sandals, but my favorite Teva's up to now. Lo, I could walk again. Still some pain, but I could walk. I immediately decided to get real Teva's (i.e. sandals) again. On the Teva website, there were these new Lite sandals. They looked and sounded good. I ordered by first pair from Teva (not Amazon). They are good. If you are NOT overweight, they will be the best Teva's you ever wore. They ARE light (lite)--seriously light. But strong enough if you are not too heavy. On sizing, although a Chaco 9.5 would probably be perfect (if they produced such a thing), I had always worn US10.5 Teva's. Always worried I would stub my toe, wanted to see the sandal out in front of the foot. With considerable trepidation, I followed the Teva sizing chart (on the website) and ordered US9.5. It is exactly my size, and I now realize that most of the problems I had with Teva involved my oversizing of the sandals. The 'spider rubber' sole continues to be the best on wet surfaces. The Lite is very flexible--great for a supinator. The sole is NOT the best on north Texas clay. That clay will clog Teva's very quickly. Well, small price to pay for protection for the nerve ganglia at the bottom of the heel. These sandals are adjustable at 3 points (like all Teva sandals). You should adjust them at ALL 3 points and insure that your heel is in the right spot and that ankle and toe straps are not too tight. And do not oversize. Just follow the Teva chart. I bought my second pair from Amazon, and I now rotate them for my daily 1.5 hour walks. Kudos to Teva for an outstanding sandal.