FIG. 1—Take a piece of fabric 98 inches wide and 43 inches vertical length. Fold the edges on top and the bottom of the fabric and sew it, double stitch. The vertical length will become 42 inch.
FIG. 2—Measure 18.5 inches from the upper right side horizontally and 4.5 inches from the upper right side vertically down and place a bag handle in that place. Then sew it to the fabric. Each handle must be 46 inches long. Then the other end of the bag handle place it on 15.5 inches from the upper right side vertically down and 18.5 inches horizontally from the upper right side of the fabric.
FIG. 2—(continuation) Lining it up with the other side of the handle and sew it on to a fabric. Then measure 4.5 inches from the upper left side of the fabric down vertically and 31 inches horizontally from the right side of the fabric, sew the bag handle in there. Then measure 15.5 inches down vertically from the upper left side of the fabric line it up with the other side of the handle and place and sew it to the fabric.
FIG. 3—The reverse (inner) side of the fabric, measure 8 inches down vertically and 13 inches horizontally from the left side of the fabric. Take 8 inches long piece of Velcro and sew one part of Velcro strip to the fabric. Attach the other part of Velcro, which is with sticky glue to the plastic bag with ziploc.
FIG. 4—Place 10 inches by 10 inches plastic bag with Ziploc on to a Velcro strip on the fabric. You've got pocket for a swimwear and your underwear.
FIG. 5—Go back to front side of the fabric, where you placed the handles on. measure 3.5 inches from upper side of the fabric down vertically and 22 inches from the right side of the fabric to the left horizontally. And place bottom side of the pocket. Pocket size 14 inches by 10 inches high. This is the front side bag pocket.
This pocket will be placed on top of the ends of the handles on front side of the bag, covering the ends of the handles, sew it on to a fabric on three sides of the bag, leaving the right side of the pocket open, double stitch the edges of the pocket.
FIG. 6—Take two zippers, each 18 inches long. One end of each zipper is locked. Open it to make one long line. Then measure 22 inches down vertically from the top of the fabric and 9 inches horizontally from the right side of the fabric to the left. Place one end of opened zipper facing down and sew it to the fabric all the way to the left side, leaving locked end of the zipper lose in the center, as shown. Then take second zipper and sew it to the top side of the fabric, measuring 9 inches from the right side of the fabric horizontally. Align the zipper with the top line of the fabric, sew zipper to the edge of the fabric open and facing up.
FIG. 7—Fold fabric in half connecting sides together from left to right (vertically). Sew those sides along the line, folding the edges of the fabric, double stitch vertically.
FIG. 8—Fold each side of the fabric horizontally 9 inches inside of the fabric (as shown)
FIG. 9—Then sew each side of the folded fabric together, just 9 inches on the upper right and 9 inches on the upper left side.
Then measure 2 inches on the bottom left side and bottom right side of the fabric and sew it horizontally just 2 inches on each side of the folded fabric.
FIG. 10—On the back side of the fabric measure 2 inches from the upper side of the bag and 0.5 inches from the edge of the fabric horizontally and place magnetic clips on all four corners of the bag. Clip it to the fabric by hand.
FIG. 11—Take the bottom side of the fabric (bag) with both hands and fold it up in half, clip the magnetic clips together.
FIG. 12—Then take the left side of the fabric (bag) with both hands and fold it in half horizontally. Close each zipper on both sides of the beach bag.
FIG. 13—Now you've got the beach bag also beach blanket and the most important changing cabin. All three functions in one unique design. When you need to change your underwear to a swimwear or vise versa, get inside of the beach bag and help yourself, enjoy it.