Instead of buying more reusable grocery bags - just make your own with a few folds and two knots!
First, lie your Wrappr face down on a flat surface.
Place your groceries on one diagonal side of the Wrappr.
Fold the Wrappr in half diagonally over your groceries.
Grab the two corners on each end of the diagonal fold.
And tie them in a double knot on top of your groceries.
Now grab the remaining corners of the Wrappr...
And tie the very ends of the material in a double knot. Leave lots of slack, this knot will act as your handle.
All set and ready to go!