This portable greenhouse from Outsunny utilizes lightweight, yet sturdy, PE coverings built over a powder-coated Metal frame. The combination of these two elements is an incredibly durable final product that can be moved from location to location, fitting in tight spaces as available. The zipper door allows for easy access and ventilation while it also can be sealed in to maintain the internal climate. Ideal if you want to reduce excessive heat or cold and keep your seedlings safe throughout the seasons. Start your backyard gardening today with this Outsunny greenhouse.