Excellent design. Put ice and a little water in it. It adds a decent amount of resistance while pulling, but it makes a big difference in smoothness and harshness. The tube that connects to the main piece is a little long for my taste though. When everything is put together it still rests on a flat surface evenly. So, things don't get wonky when you use it. I don't use it all the time, but I'm glad I have it. Definitely a great ash catcher which has a lot of innovative design which gives real benefits.