I second everything Pika says. Check Thruhiker.com for shell and baffle material. I've used my quilts as long as 9 months continuously in the field with 0.9 oz. shells and noseeum baffles. No failure. Ever. You will be dissatisfied with sewn-through construction. Baffles are really easy to do. Just chalk line where you want them, fold the shell, stitch a quarter inch seam and stitch the baffle to it. The stitching will be protected... inside the shell. Straight up & down baffles are perfect. Down clings to the net to block convection drafts. Avoid trick gimmicks like slant baffles and V baffles. They don't do more than add weight and construction hassles.