Have an old 20+ years cats meow bag.
Plan to add down, (at the moment no feathers).
Am seeking a 0° "absolute" comfort level for a cold sleeper. So I am making up a 20° or25° rule instead of the average 15° rule.
I am dealing with an old bag of unknown
seamingly quality down. (Recommendations on simple damp proofing). And am just going to tape up
Instalation slits with Ttape or gorilla tape.
Any advise, Recommendations, or advice greatly appreciated. Thank you.