Baby loves it!
Got this for my 8 month old niece after she kept trying to drink from ours. She's still getting the hang of the concept but loves having her own little water bottle. It's convenient enough to toss in her diaper bag and keeps her water cool in this heat. The only downside so far is that my niece is currently exploring the theory of gravity with anything thay she can drop/push/throw, so I'm going to shop around for a little rubber cozy to keep the water bottle (and the floors) safe.