Roomy interior. Good ventilation. Strong frame for use with tarps of any kind or other covering such as cardboard, mats etc. The parts of this frame kit can be combined to make many other shaped frames. Each pole segment is flared at its end and can be joined together to create a long water or irrigation pipe. The tarp fasteners can be used to join tarps together to make larger structure and can be adapted to other poles such as bamboo.