Lugging conventional rolling carts up stairs is exhausting, while going down is often treacherous. With the Trolley Dolly™ Stair-Climbing Cart these concerns become things of the past. Three wheels connected by rotating spokes allow the Trolley Dolly to go up and down even steep stairs effortlessly. 4lb collapsible cart carries up to 110lbs, while waterproof bag with storage compartments keeps your items dry during stormy weather. 17 ½"L x 15 ½"W x 38 ½"H. Available in red, blue and black.