u/Beneficial_Shift9086

Hello, I am trying to sew a lined sleeping bag with detachable sleeves but I don't know how to attach the zipper to the body od the bag. When I sew a sleeping bag I usually put the fabric and lining right sides together then I sew around the neckline, armholes and down the zipper and then I flip it inside out through the shoulder so it's wrong sides together amd then I sew up the side seams. But I can't do that here because i need to add the zipper first so I need to sew up the side seams first but if I do that I can't turn it inside out, does anyone have any suggestions please?