5 and I ordered a 7). I had seen a similar design by DHANGER, but it was much more expensive and over my budget. No matter how it is explained or reasoned, the absence of the brick is felt! I am in love with how they feel, but I had ordered the black and berry color and received gray and lavender shoes! The bars are too close together making it hard to use the back bar if the towels are thick. However, its extremely misleading, along with ILLEGAL, for Amazon to sell counterfeit boots. Great moccasin/slipper. To set them up you need to install Samsungs "Galaxy Wearable" app. I even mentioned in the email that this was the first time I bought one of their products and this is a chance for them to build a relationship with what could become a lifelong customer. I think I got a bad unit.