Feather knit Super soft HeatWeaver® plush lining Advanced insulating yarn The Heat Holders® Women's Sloane Feather Knit Roll Up Hat is created with our high performance thermal yarn and luxuriously soft HeatWeaver® insulation lining to maximize the amount of warm air held close to your body. The roll-up design helps provide your ears with extra protection from the cold, whilst the knitted pom-pom provides an attractive finishing touch! Matching mittens are also available.