These shoes are slip free, squishy and as comfortable as footwear can be after 12 working hours with nary a chair in sight. Your feet do need a couple days to get used to the unusually shaped sole; and if you didn't read the paperwork that came with your Shape-Ups, you didn't find out you had to start using them gradually, letting your legs and feet get accustomed to your new gait.

I had an issue with the super spongy tongue seam digging into the top of my left foot. However, once broken in, they're pretty great. I've had them a couple weeks now and they seems to have worn in well. Only time will tell if all the seams hold.

If possible, please try these on before purchasing. After trying on my usual size I ended up purchasing a pair a half size larger, as my toes were touching the end. Not sure if it's due to the way the foot sits in the shoe.