The bottom of this bag is roughly 1 in deep it has enough room for a 7.5 inch graphing calculator. Multifunction: It is not only a pencil case but also a coins pouch cosmetic bag and accessory bag meeting your different needs. It s a nice gift for students sons and daughters young and adults writers and artists holiday or birthday present or back to school or travel supplies. Customer Service: Your Satisfaction is our number one priority here! If you have any questions about this pencil case or encounter any problems just feel free to contact us.