Since 19th century Mayfair tailors began working with wool, it has become a staple of casual but fashionable menswear. Sferra's Nerino blanket, in Superfine Merino wool, emulates the fabric they worked with, while its differing front and back hues suggest the reversible waistcoats that had just come into favor. 100% extra-fine merino double-faced yarn-dyed wool.