This is one of the best small water bottles we can find. It is made to better specs than most and as a result, if used properly, has less tendency to leak than other less expensive products. The secret is in making sure it has the rubber washer in the cap, and filling it to the top with room temperature water. Unless there is a pin-hole in it somewhere, the water creates a vacuum as it is dispensed and keeps it from leaking. This bottle comes complete with the stainless steel mounting clip. the nipple and ball valve are also stainless steel for sanitation and for long life. This bottle comes in our Sugar Glider Starter Kit, but you may want to order a second one for supplying other fluids such as Nectar.