Its as easy at sewing a straight line. Really. And we've loved ours this summer.
Just fold over the towel from the top about 12-14" (right sides together) and then sew right down the edges! Tip: Sew about 1/2" in so you don't brake a needle trying to get thought the ends of the towel.
And let the wind blow! You're towel will stay put & claim your chairs at the same time! They also fold up into each other pretty nicely.
And in other news...we'll be playing catch up on the blog for the summer.