The 16 inches holographic rainbow bong is made with 5mm thick glass and has a 50mm tube. The base diameter of the bong measures 4.8 inches, which makes it stable and sturdy. The 8 tree arms percolator helps diffuse the smoke and gives it a smoother hit. The bong also features a 14mm bowl, which is perfect for packing a decent amount of dry herbs. The holographic rainbow design of the bong makes it visually stunning and unique. Overall, this bong is a great combination of form and function, and a perfect choice for any smoking connoisseur.