Big plys. 1 and the G502 line is no different. Better battery life and great noise cancelation when talking. Slippers are super soft! My kiddo wears a size 5 and needs thick wool socks to almost make them fit. I would return this item however due to the fact that it is not shipped (or shipped with high customs prices) to my country i am keeping it. I decided to buy this scope and see for myself. It?s strong and it fixes perfectly with the case. I was able to get the medium and it gives me room enough to make it smaller. However, I literally took off a size 8M LifeStride shoe and put on the new size 8M LifeStride shoe and went from comfortable to painful.