composed of tightly woven ballistic nylon and a flap of dense, colorful polyester, this bag is happy and fun but also practical. The materials used will resist staining, and they are easy to clean when dirty. The bag measures approximately 11.25″ tall x 15.5″ wide x 3.75″. The front flap has a 9″ tall zipper guarding an approximately 11″ wide pocket. On the back of the bag is a lovely 12″ wide x 8″ tall zippered pocket.