Blue nylon windbreaker, some scissors, and some iron on adhesive like this stuff should make a decent approximation. or depending on your cutting and/or minimal sewing skills, by some cheap nylon fabric and iron it together with the hem tape. a few stitches at the end should keep it together for the day.
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Heather

"I distrust those people who know so well what God wants them to do because I notice it always coincides with their own desires." -Susan B Anthony