Personalized these with fabric paint and gave as inexpensive gifts for Christmas (had 9 kids to buy for).  Preschool through college-age kids seemed to enjoy them--at least enough to use them on a regular basis.  Younger kids were able to cross straps for a tighter fit.  Definately good buy for the cost!  Also, bag is listed as "small" but small is a relative term--it's actually about normal backpack size length wise--the actual volume that could fit in the sack may be a bit smaller.  Any larger would have been too big even for me (a small adult).