With just a box fan and this kit, kids can escape into their very own hideaway and lay beneath the stars, day or night, anywhere in your house. Simply set up the fan at one end of the fort, turn it on, and watch it instantly inflate. It has no floor, so it's easy to enter and exit. To deflate, just turn off the fan. Made of polyester, the fort features a viewing window and a mesh divider to screen off the fan. It folds and stores compactly. 77"w x 50"h.