The Hitrenn bag for Adidas by Stella McCartney is the perfect back to school bag for those days when you don’t need to care a ton of books. The bag is made of light blue cotton jersey. The main compartment is access from a top zipper, and there are two external zip pockets. And since teen-age girls love logos, there is a clear plastic star with the Adidas-Stella McCartney logo. $115