The Red Eye Tek 9-inch Imperial is a bubbler, a handheld piece that holds water like a bong for cooler, cleaner hits but stays compact enough to carry. A built-in percolation system filters the smoke through the water, so the draw is smoother than a dry pipe, and the comfortable mouthpiece and sturdy base make it easy to use at home or on the go. At 9 inches it's a handy in-between size. It's built in borosilicate glass for durability. A good pick for someone who wants water filtration without committing to a full-size bong.