The 45NRTH Toaster Fork balaclava uses a flat-seam construction so it sits smooth under a helmet instead of bunching at the pressure points a standard seam creates. Its merino wool blend regulates moisture and temperature, holding comfort down to 0degF while the long drape adds coverage across the neck. What Our Gearhead(R) Experts Are Saying:"I've worn this through single-digit rides and never had to adjust my helmet mid-ride to fix a bunched seam. It sits flat the whole way through."