You’re probably seen on TV or in the drug-store the Snuggie, a blanket with sleeves (that looks more like a bathrobe worn backwards) that purports to keep you warm while watching TV or reading on the couch. The blanket with built-in gloves below keeps your arms and hands warm while reading in bed. Notice that the top of the index finger is cut out, to make it easier to turn the pages. My solution is to wear arm warmers, which do double duty, as I can wear them during the day under my coat… Found here and available here.