Honestly, I've never been diligent about using reusable shopping bags -- because most are just too small. And you still have to carry a ton of bags from the shopping cart to your car... then again from your car to your kitchen. But since I've had these 4 large Lotus Trolley Bags, I use them all the time! Grocery shopping has never been easier. Here's why I like the Lotus reusable shopping cart bags so much...