Trolley shopping bags are useful for a variety of reasons, including:

Convenience: Trolley shopping bags are designed to make it easier for you to carry your groceries and other purchases. With their wheels and handle, you can easily transport heavy items without having to carry them in your arms or on your shoulders.

Storage: Trolley shopping bags are also great for storing your purchases when you're not using them. They can be easily folded up and stored in a closet or under the bed, taking up minimal space.

Eco-friendliness: Using a trolley shopping bag is an environmentally friendly option. It eliminates the need for single-use plastic bags, which can take hundreds of years to decompose in landfills.

Health: Trolley shopping bags can help prevent back strain and other injuries that can occur when carrying heavy loads. They allow you to transport your purchases without putting unnecessary strain on your body.

Mobility: Trolley shopping bags are great for people who have mobility issues or disabilities, as they make it easier to transport groceries and other items without having to lift heavy bags.

Overall, trolley shopping bags are a practical and convenient option for carrying your purchases, and they offer a number of benefits over traditional shopping bags.