Very flimsy. There is an ability to lock but it really isnt secure. It will keep small children and honest people out. We bought it for pool toys so it will do the job. Don’t expect people to be able to sit on it as it won’t hold peoples weight. It also doesn’t close completely. I don’t know if this is for air to circulate in and out or a defect. It’s ok for me as it’s just for toys.