However, when I put them on my feet they were heavenly. Si tienes que limpiar tu casa en zapatillas es mejor que te las quitas porque se empapuchan y no hay nada que hacer. It is smooth and the 24k DPI doesnt miss a beat. Ive even fallen asleep in bed with these one and in the morning ears dont hurt. I hope it gets better as I use it more and get used to it. If youre 25cm you should get the 8. But this feels like the comfort of a sandal but looks like a nice relaxed shoe. So far so good with these. If you are in any way OCD about your clicks Id steer clear. I would like to mention however, the wheels are a bit difficult to move around smoothly.