The finished wallet is 4"x3" and barely thicker than a money clip. It even has a little window for your ID card.
For this instructable I used lightweight cotton, but you will probably want something a little bit tougher.
Step 1: Materials --
Cut 8.5" of elastic.
Fold over and sew a .25" hem along one long side of each piece.
Fold over and sew a .25" hem along one short side of each piece. Be sure to do the opposite ends of each piece.
Step 2: OPTIONAL for ID Window.
Cut out a 3" x 2" rectangle from the outside fabric. Be sure to leave about a Â½â allowance from the raw (unhemmed) edge.
Cut a 3.5" x 2.5" rectangle from clear plastic.
Sew the plastic to the wrong side of the fabric. A zig zag stitch might be better than the straight stitch I used here.
Step 3: First Pocket
Sew around the opposite two sides, as shown.
Step 4: Press Seams
Rotate, so that the open sides are at the bottom and left
Step 5: Mark Sections
Iron the fold to mark it. Be careful not to melt the plastic ID window. :-)
Open up the piece, and Fold in half in the opposite direction and iron.
Step 6: Sew Sections
Sew across the crease long ways
Sew up the middle crease. (for a longer coin/change pocket, don't sew all the way -- only sew to the center seam)
Step 7: Finish First Credit Card Pocket
Optional: Pin a broad piece of elastic inside the fold on the right side. Another option would be to use velcro for the closure.
Sew the right side of the wallet, thru all of the layers.
Step 8: Second Credit Card Pocket
Optional: Top stitch the top edge for a more finished look.
Step 9: How to Use the Bill and Credit Card Compartments
Credit cards go in the front two pockets (I put my Starbucks card in the windowed compartment.)
Bills go in the big pocket behind the credit cards