1.Polyester knapsack bag with tri-wheels for curbs, steps and elevated surfaces .Ergonomic comfort grip handle for easy transport. PVC coated wheels are smooth rolling and quiet, will not scuff or damage floors. Knapsack quickly secures contents of bag with black drawstrings .Balance bar and tri-wheels allow bag cart to sit upright, Holds up to 40-Pounds 2.Our super lightweight Hoppa Shopping Trolley is perfect for both the young and old and offers a safer, more convenient way to shop and travel. It removes the physical strain of carrying your shopping, featuring an easy-to-grab handle and 2 wheels for smooth pulling which makes it ideal for your next adventure. 3.Our folding trolley frames are made of aluminum and have the advantage that they are lightweight and rust-proof, so you do not have to worry about your handcart damage on rainy days. The extended long handle leaves no need to bend it or push stairs up and down stairs if you are the big guy. This waterproof folding shopping cart with wheels not only for transporting everything from laundry and food, on camping equipment tools. It is used for gardening files, suitcases, bottles of water, sports equipment, beach aisle and kitchen supplies