This backpack is a great size for 4-8 years.  It has some pockets inside for little things, my preschooler likes to keep his cars or paper and crayons in it.  It's not too heavy for him, even loaded up pretty well, but it also has strong straps that don't rub and easy access outside pockets for his water bottle.  The color is bright and he really loves it.  I has held up fairly well, no rips tears or broken zippers.