Rib knit Fold-up cuff Carhartt label on front. The A18 cap was developed in 1987 and very quickly became Carhartt s best-selling product and world famous. The warm cap was originally designed as workwear. Today you see them everywhere, on construction sites, campsites, in soccer stadiums and on the street among young people. The thick acrylic yarn makes it your warm companion in cold winter months. The stretchy rib-knit material won t scratch and ensures a snug fit. Features Carhartt label sewn on front Stretchable rib-knit fabric