Very sturdy and secure little coop on wheels. Single axial, utility trailer frame. Green tin roof. Wire mesh bottom. One side opens for access to the entire coop. Hinged lid on nesting box. Main entry has a ladder to aid chicks and older birds in and out of the coop. My hens love these nesting boxes. Given the opportunity, they choose to lay in this chicken tractor rather than the nesting boxes in my big coop! Selling to appease my husband. He wants me to cut back on my chicken "clutter." But it's a great coop!