Material for sewing. I used denim.
Old pair of skivvies. (elastic only)
Velcro strips. (Male and Female)
Step 1: Cutting and sewing the pouch
I cut a strip of denim 8 inches tall and about a foot wide. From that I cut the parts for the pouch. Two 4X6 pieces and the strip at the bottom for the button flap.
Single stitch the bottom pieces together and go over that with a narrow zig-zag stitch.
ONLY STITCH THE BOTTOM!!!
Cut off the extra flap from the main piece of fabric and fold it in half. Sew it along all 4 edges with a straight stitch.