We got these to store patio set cushions.  The size could be just a little deeper - front to back.  The cushions are pretty standard in size and are just an inch too wide to fit perfectly.  They require a little squooshing to fit.   As a result the sides bulge a bit and in fact at times detach at the bottom.

Pros: Big, clean looking and water and dust proof.
Cons: Slightly narrow for standard patio seat cushions and could use better bottom brackets to attache sides