I have several of these shelves. I bought them to store children's toys like Fisher Price Little People castle, boat, and farm. We also store lots of board games, and totes full of smaller toys like Littlest pet shop. These shelves work great for light items like shoes or blankets. They are not suitable for stocking cans of food, or showcasing your encyclopedia set. Mine do not wobble. The shelves are particle board held up by plastic, so they will warp if too much weight is placed on them. I will say that these are the deepest shelves I could find at nearly 18". The 4 shelf and 5 shelf are the same depth and work well together as the shelves line up in height. I've had a previous set of 2 shelves for more than a year and they are in terrific shape, so I recently bought 2 more.