Before I brought the shoes I read all the reviews about the size issue.i too had to buy whole size bigger then they have listed. I wear a size 7.5 ad I have a wide foot so I had to buy a size 8.5. I wear them to work and when I dance. So there really a great shoe
I teach several Zumba classes a week, and find that these shoes are extremely comfortable. They have a good cushion to them, and are more comfortable to me than the Block Boost. I have a wide foot, and they are very accomodating to me. Order 1.5 - 2 sizes larger than your street shoe depending on the width of your foot! I normally wear an 8 - 8.5, had to order a 10, which is par for the course in dance sneakers.
I love the look of these shoes, and they are comfortable. Compared to the Boost II, they seem thinner (top to bottom); they may not work for you if you have thick feet. The heels are not as high and there is no toe box as with the Boost. Women should order 1.5 - 2 sizes higher than street shoe. The spin spot is too slick for me, but it will probably work OK for some surfaces or if you do not have to make quick stops or direction changes. As a result, I would not recommend them for Jazzercise, but they may be OK for Zumba.