The hamster bottle designed with premium roll ball,your hamster can drink happy and easily. Stand Steady:Made of durable plastic and metal,our hamster drinking bottle can stand up steady,no worry about tipping over. Suitable Size:The water bottle holder volume is 80ml,the tall is 13cm / 5''and the diameter is 4.5cm / 1.75"" ,which is suitable for small animals,like dwarf hamster. Healthy & Easy Clean: With the premium eco-friendly material,safe to use and easy to clean. Good Choice:There are four colors provided for your hamster.Strongly recommend as a gift for families and friends.Please buy with confidence,your after sale is guaranteed.Healthy & Easy Clean: With the premium eco-friendly material,safe to use and easy to clean.Good Choice:There are four colors provided for your hamster.Strongly recommend as a gift for families and friends.Please buy with confidence,your after sale is guaranteed.