My daughter started middle school this year and a see through backpack was a requirement.  I looked all over town for something that looked like it would survive more than a few weeks of wear and tear with large textbooks inside.  Finally found this JanSport pack and was ecstatic.  My daughter loved the purple color.  It's mesh but quite sturdy and well worth the price.  It's big enough to hold her notebook and a couple of textbooks which is perfect.  Highly recommend this product.