Arm sleeves are going green?! part 3

Make sure both sleeves are the same length.

Next, measure some 1/4 in wide elastic to fit around the upper part of your arm. This is where the top of the arm sleeve will be.

Next, with sleeve turned inside out fold down 1/2 inch from top edge once and press.

Next, fold down 1/2 inch again and press.

Next, sew down edge using a wide zig zag stitch,and leave a 1 inch opening so you can thread the elastic thru.   The zig zag stitch will give the fabric some stretch when you put on your arm sleeve and keep the threads from popping.

1 inch opening.

Zig zag stitch.