I love my Flip & Tumble bag but I have to admit that it cost more than I actually wanted to spend on a reuseable bag. I get lots of "thank yous" and "thanks for saving the environment" when I tell the cashier at WalMart that I don't need any plastic bags. You too, should bring reuseable bags with you everywhere you go (stash them in your purse). If Flip & Tumble is not for you, you can pick up Envirosax (follow them on Twitter - @Envirosax) at Kitchen Stuff Plus for $8. It rolls up nicely and will definitely fit in your bag or in your glove compartment.