Cut out all your piece to match, 2 cotton pieces and 2 batting pieces
Cut your fabric for your hang tag and fold over longways and press
Fold each edge in towards the center fold like a double fold bias tape and press
sew the open edge together with a top stitch
Place your two pieces of cotton fabric with right sides together, the piece on the top will be your lining
Fold your sewn hang tag in half and sandwich it in between the two cotton layers, place on the inside with the edges lined up with the top edge of the 7" side and pin in place about an inch in from one side
Place your cotton stack on top of the two layers of insulating batting and pin everything together
Sew along the top edge sewing together all 4 layers including the ends of the hang tab
Open up the cotton layer so the right sides of both sides of the fabric are facing up and press lightly
Fold the entire in half lengthwise making a long tube
Sew along both ends, you can sew it straight or round the corners a bit
Sew down the long edge leaving a 2 inch gap in the lining layer for turning the whole thing right side out. Trim the corners slightly.
Using the gap you left open turn the whole thing inside out, this will take some work since one end has many layers.
Once right side out use a topstitch or stitch by hand to close up the gap
Push the lining layer inside the rest of the tube.
Optional* use a top stitch to stitch along the upper edge for a neat finish.