I love Shape ups, but no one said this product had what was called a "sock fit". I have never heard of such a thing, but the shoe is very short in the back. It feels like the shoe will come off like a slipper. I own 8 pairs & they are all great, with the exception of this one. And yes, all the shape ups run about a 1/2 size smaller than regular Skechers. I highly recommend the Shape ups, just not this pair.