They also removed the clunky center weight on this newer model so there isnt any "catching" on items as it hangs down (such as your backpack when hiking), or pulling it out of your ears as you turn your head from side to side. A surprisingly good product. My wife has managed to scratch every vehicle its been on too, its hard to finagle the inside bike on w/o scratching the car, catching the brake/shift cables and the pedals need to be in the right spot. My size 8 foot fits with a little bit of extra room. The manual comes in every language spoken in the solar system. The sole is very squishy so when you step you come down right on that plastic part. I almost returned them because my feet hurt so much from wearing these. The incorrect bolts are included with the package. So, healing around the house - I have been wearing these slips 18ish hours a day! I bought this because of my sisters results and Ive referred my good friend to get it as well!