These Lululemon backpack would make the perfect gym bag, diaper back or school bag! The large main pocket contains a mesh zipper pocket as well as a place to secure your water bottle inside the bag with plenty of pace to store your additional belongings! On the backside is a padded laptop sleeve with a secure zipper. Additionally on the backside is a hidden side pocket. The bottom of the backpack unzips for additional storage such as gym shoes, or whatever else you may need. Backpack has been loved for a few years but has lots of life left! No tears and still in very sturdy condition! Feel free to ask for more pictures