This jug is huge to start! It can hold 64OZ of water!! You also can purchase all different flavor of pods if you want more then just water in the jug. You simply take the pod and just add it to water by pushing down the pod at the top of the jug. I must admit I gave it a 4 star as it is hard to drink out of as it doesn’t have a straw and because it doesn’t stay cold long as I have to keep putting it in the fridge. The mouth top is literally just a bigger circle in my opinion that design could of been better it is on the smaller individual bottles just not big jug here. Again I love the size as my water jug as it’s big enough to last all day but issue there is the temperature it will get warm before the end of the day tip put in fridge or cooler when not drinking or add lots of ice!! Big jug tho go get you one of these!!!