The All in One -- is all you need for your and your special friend to spend quality time. Out on the trail, the crossbody leaves you with hands free. Able to hold a water bottle up to a full liter or a specialized bottle/ bowl combo; a fresh roll of poopy bags, and even a slip pocket for the phone and keys. All in One is definately -- All you Two, Three, or more need! 

This bag measures: 3.5 inch diameter base. 10 inches tall with adjustable strap of 42 inches