Review on InnerFit Insulated Hydration Backpack and Water Bladder - Durable Camel Backpack Hydration Pack for Running, Hiking, Biking, and Outdoor Activities - Lightweight Water Backpack by Nathan Vaughn

If I can post some pics I will. We bought 2 of these for our kids. 10 and 9 years old. They were the perfect size for her when we toured Big Bend. You could carry 2 liters plus a few small items like a napkin, a foldable raincoat, a compass and a few other very small items that I don't remember). The backpack has chest and waist hooks. The water pipe is easily accessible. It doesn't have external pockets on either side for extra bottles. My kids said it was comfortable on the back and shoulders and it even has a couple of small zippered hip pockets to keep their sunglasses in when not in use. We traveled around Big Bend for several days, and each of them lasted 5 hours. (Remember they were hydrating before, using the pack then, and hydrating afterwards). I highly recommend this for toddlers (unless you have a very tall toddler) or if you're going for a quick bike ride or hike, I just found it a bit short for me (5ft 6in). ").