Love this!! My  four year old grandson picked this out from many on Amazon and he made a good choice. Fits him well, albeit a little loose, so plenty of room to grow into it! The water bottle pocket on the size is great for easy access he just needs to slide the pack around to the front. Couldn't be happier. Carries just enough! Zippers feel like they will hold up and all in all pleased with the quality. Great purchase.