I picked the the extra large for the length, (I'm 6'4"). Pre washing helps remove some of the dye, cold water and woolite no problem. 10 Minutes on the clothesline and ready to repack. I used it the following weekend on a couple nights with my boy scout troop camping trip. Great results, comfy and the pillow pocket is such a nice touch. I would make this better by tapering the foot of the bag for better fit in a mummy bag. This liner has a wide foot which would be exta welcome in a rectangular bag. The liner. Is so light and smooth that I didn't notice the extra material or weight. Some folks may not like the extra material around their feet, but I think the extra length is so worth it (all my bags are long,).