Wikipedia - The bed jacket, a woman's garment, is a waist-length robe worn to cover the chest, shoulders and arms while sitting up in bed. Its short length and cape-like cut allowed it to be put on (or removed) while in bed. Often made of sheer or lacy fabrics and displaying very feminine trimmings and details, it was often used more for seduction, rather than warmth or modesty. It was popularized in 1930s Hollywood films featuring glamorous settings and glamorous stars lounging languorously in their silken bedrooms. Ostrich feather tips, swan’s down, pleated tulle and shirred lace were just a few examples of the extravagant materials that could be used in creating these confections. These garments are currently very popular with people who have been hospitalized or recommended bed rest.
I think it is fun to see these old instruction booklets with their great pictures. For other Vintage Thingies check out Vintage Thingie Thursday.