I have a Cocoon Mummy sleeping bag liner for sale (color blue). Material is 100% polyester Coolmax. The liner weighed 8.8 oz on my scale. No stuff sack.
per the website:
Cocoon MummyLiners are specially designed to fit any tapered mummy sleeping bag. They feature a drawstring hood, a boxed foot-end and are double stiched for durability.
SOLD