Kids Giant Alien Inflatable Costume We Come for TreatsOur single Mars contact had some interesting news the last time they phoned from home.The attached shoe covers obscure your child’s most comfortable shoes so they can enjoy a night full of trick-or-treating without messing with their alien illusion. Once zipped up, with their arms through the sleeves and face through the oval cutout on the front, they need only power on the fan to give the costume its plump shape. We didn’t like the sound of that at first.