I forgot all about my Frostline down sweater & hood I made in 1976! I should drag it out of the closet & weigh it. It might compare favorably with the Patagonia puffball I use now. The down sweater was made on a 1940's (at least) vintage sewing machine that required an attachment to do zig-zag stitching. I think I've become too spoiled in my advanced age. Christine