https://tools.woot.com/offers/180-foldable-2-tubes-shoe-dryer-portable-boot Vevor 2-Tube 180° Foldable Portable Shoe/Boot Dryer w/ 3-Hour Timer (SD-004NB) on sale for $19.99. Shipping is free for Amazon Prime Members (must log in with your Amazon account and select a shipping address in order for Woot to apply free shipping) or is otherwise $6 per order.