45NRTH, a brand that specializes in winter cycling gear. The 45NRTH Naughtvind Pant, designed to protect cyclists from harsh winter elements. Material: They are made from a stretchy, breathable, wind- and water-resistant material. Insulation: The thighs are fleece-lined to retain body heat. Ventilation: They feature zippered vents at the thighs and calves to help regulate body temperature during a ride. Functionality: The pants include reflective accents for visibility and an adjustable waist for a better fit. Purpose: They are designed for cold weather and are part of a winter clothing system for cycling.