Why must it be an electric blanket? A good down comforter holds in body heat quite well. There are sleeping bags at LL Bean or other suppliers that are rated to 40 degrees below zero. It seems to me that a good thermal blanket or comforter ought to be adequate.
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Ed & Bev Felker
Retired USAF Col and retired Nurse
Traveling with Lily & Bella ('Teddy Bear' breed)
2015 Vegas 24.1 (E-350)
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