Some mice have a shut off switch on the bottom but this one does not. When I put the old and new pair sole to sole the difference was dramatic, maybe not made by the same guys, with the same molds? Anyhow have no idea what to order so off to the brick and mortar store. The one con i found was that the product is very flimsy. For the price, I think they are good sandals. I was looking to upgrade the HD558s for headphones that would suit this set up better and my genres of music that I tend to listen to (mostly Acoustic, Rock, Popular & Jazz). Then add the lights that follow along with your music and your in heaven. I am pleased. Very comfortable but holds everything. If you are planning on squatting on this rack forget it, it?s to low to the ground it is adjustable but it doesn?t go up that high. Dang it dang it dang it!