My 5 year old grandson hikes frequently with his mom and dad. This allows him to carry his own "supplies" as well as water. It is high quality and was a perfect gift for him.

I got one of these two years ago for my son (we have been through two bite valves but I believe he has figured out you don't chew on them). This summer it has gone EVERYWHERE with us for the last two months and used five days a week. The backpack part is really durable and has a lot of pockets. He has spent the last two weeks at a farming summer camp and thrown the pack on the dirt, from the looks of it, constantly - yet it is not ripped or damaged at all. For family camp located in a dry, high altitude part of Colorado he was one of the only children who did not suffer from lack of water consumption since he could just sip when he wanted to and the 1.5L would last him most of the day. I have packed it with sunscreen, lip balm, a hat, glasses case and lunch with no problems. I love it!

I bought two packs. My 3 an 5 year old boys love them.
My oldest spent 1/2 an hour planning the perfect things to load it with, 20 feet of 5 mm cord, windbreaker, hat mittens, extra socks, flashlight, snack, windpants. He helped me fill the bladder with over a liter of water. Best yet both boys carried their packs without a single complaint for 2 miles. I had none of their gear!

The packs are well constructed, highly ergodynamic, adjustable, no obvious failure points. Good colors. The bladders are very rugged.

One concern, the bite valves don't stand up to the chewing that my young kids submit them to. I may need to buy stock in the company that supplies Camelback with bite valves.