I was super excited when I got it and froze it ready to use, then I noticed it doesn’t glide that well, further inspection it has a spare piece on the ball bearing making it catch on the bottom with that but. Would be a much better design if it was a perfect rounded ball without the bit that catches. Slightly disappointed. I’m making it work for me tho, the slimming effect the cold steel rolling on my contours to depuff is a wonderful feeling and effect lasts all day. Especially nice feeling whe...