... air wheel for choice 4.folds easily for storage Aluminum super light-weight protable pet trolleyFeature:play the roles of luggage cart ... ,with the help of this fantastic powerful trolleyEntire Aluminum frame,super light-weighted but strong,easy to clean and sterilize,last for ... -513AATAir Wheel, Aluminum Board, Two Doors121.7623.76107 223 Aluminum super light-weight protable pet trolley KB-511NAF