I purchased this shoe yesterday. Really didn't need a pair of shoes, but after trying them on they were a "must-have." I'm 63 years old and love to walk, but have my age-related hip and knee pain plus a Morton's Neuroma in one foot. I wore this shoe this morning for the first outdoor walk. I felt lighter, pain free and energetic. They are just wonderful. The comfort is by far the best yet in any shoe I've ever worn. I normally wear high-end New Balance walking shoes.  The comfort from the air pockets on the Reebok is outstanding. I don't feel out of balance in these shoes and the arch support fits my foot perfectly. I wear an 8.5 normal shoe and a 9.5 in athletic shoe. I do wear thick socks so the 9.5 fits good. It may be a slight bit longer than the New Balance. I tried the size 9 but it was too snug with thick socks. I did read the other reviews that said the shoe doesn't last long and puncture problems losing the air. I never thought of that before purchasing. But I can say if I can get 6 months out of this shoe without an issue I'll be very thankful. I plan to purchase another pair to have a reserve pair for travel. I hope you all can buy a pair to pamper your feet. My concern is not really if my legs get toned. If I do that will be great, but just the comfort alone is worth purchasing this shoe. Hope I don't have a blow-out!