When it's cold on the bike, your hands and feet are sure to suffer first. After grabbing a pair of Sugoi's SubZero gloves, warm your feet with the Firewall Bootie. The booties were constructed from Firewall 220 fabric. This is a 3 layer softshell fabric comprised of a knit fabric with a breathable polyurethane membrane. The fabric gives full range of motion, which means your ankles still flex. The material is also thick enough to prevent the booties from sliding down your ankles. The dual action of wicking and breathability from the inside, combined with wind and water resistance on the outside protects you in the coldest winters. The Firewall Booties were designed with a horizontal side zipper making them easy to don and remove. This also allows for easily accessible shoe buckles for adjustments during rides. The Sugoi Firewall Booties are available in sizes Small through X Large in Black.