This offer has been extended! These Giant Monster Slippers listed at $29.99, but you can get them for $14.99 during this sale at ThinkGeek. Shipping is free when you enter our exclusive code BRADSFREE17 during checkout. We can't find these slippers anywhere else for less than $39! They fit most adult shoe sizes, and they make a crashing noise every time you take a step. They take four AA batteries, which aren't included. You can turn off the sound if you'd rather walk around quietly. Sales tax is charged in most states.