It’s perfect to put your feet up, store things, and sit on as well! My dad really doubted it could uphold someone’s weight but he sat on it and was fine (160lbs). 
I will say that it is not easy to move around on a carpet floor (the force of friction is strong with this one haha). You have to pick it up to do so and that normally requires me to remove the lid. 
I have a hard time sitting down in one position for long periods of time so maybe for most this isn’t a thing of importance. But it has relieved my need to have my feet up while studying - as well as add additional storage to my room.