This delightful hut is crafted from heavy-duty, flame retardant and mildew resistant cotton canvas, rendering it **completely waterproof**. Its versatility allows it to be used indoors and outdoors! Every seam, raw fabric edge, and openings have been meticulously reinforced, ensuring a long lifespan. The tent features a convenient window on the side, allowing parents to check in effortlessly while granting curious kids a view of the world outside. Additionally, there are pockets below the window—perfect for storing books, toys, or snacks. To enhance the ambiance, you can hang LED lights around the poles or at the entrance. And if comfort is your priority, Amazon offers a plethora of incredibly cute and comfortable mats to place inside the hut, all at very affordable prices! This is also AZO free! It has no harmful dyes such as Tartrazine E102, Yellow SY E104, Yellow SY E110, Azorubine E122, Ponceau 4R E124, and Allura E129, making it a safe choice for children.