Flat-backed water bottle sits against the cage more snugly than all-round stylesHydrate your pets the "green" way with this glass and stainless steel no-drip bottleChew-proof design prevents pets from destroying the spoutIf you're a fan of the glass waterer, you'll love this flat-backed design that fits snugly against the wall of the cage. Eco-friendly, recyclable glass bottle features a chew-proof, stainless steel drinking spout and tubes. Floating corn inside bottle serves as a refill reminder. Double ball bearing design ensures no-drip use, year after year. Bottle attaches securely to the inside or outside of any wire habitat by spring attachment and hanger. Simply fill it, cap it, and hang it. Bottle will be tested before sending, a little bit of water can be left over in de bottle.