My 5 year old son absolutely loves this back pack. He takes it to school every day and it is big enough to fit all of his work folders, his lunch bag and his jacket. It is very light so there is no added weight. We have not put anything too heavy in it so I don't know how it will hold up with heavy books.

I want to add to this review many months after I wrote the first one - it is starting to tear at the fabric and the seam at the bottom. My son's lunch bag is pretty heavy so the weight of it caused the backpack to tear. Not super durable but my son just loves it anyway. It will last one more month until his school year is over so I guess it did it's job. I was going to get a new one for him anyway. Wish it would have held up a little better though so he could have used it for summer camps.