I've been using this pump now for about a month. 4 times a week, 20 minutes at a time, and I have to say that I'm impressed. It isn't awkward, and it doesn't cause any pain or irritation like some other pumps do. After just a month I'm already noticing some gains in girth. I am very impressed with this product and would definitely recommend the kit to anyone who is just looking for recreational use, or for someone looking for some gains in size!