Trolley Dolly Stair Climber, Red Grocery Foldable Cart Condo Apartment The Trolley Dolly Stair Climber is the picture-perfect foldable cart that balances lightweight capability with durability. Trolley Dolly folds in half for compact storage. Tri-wheel designed facilitates stair climbing ability.The Stair Climber has 6 All-Terrain wheels that allow smooth rolling on most surfaces. The cart glides up and down steps and curbs with ease. Comfort cushion handle reduces stress on the joints and makes the the Trolley Dolly the supreme shopping cart, grocery cart, utility cart and overall cart on wheels. Weatherproof material keeps contents dry from the rain, snow and the other forces of nature. Contains 7 compartments, which include a beverage holder. Remove the bag and it becomes a lightweight dolly capable carrying 110 lbs. Apartments Houses with Stairs Dorms School/College Campuses Laundry Mats Grocery Store Public Transportation &amp; Much More. Concrete, Asphalt, Gravel, Cobblestone, Grass, Curbs and now even Stairs!