Long-sleeve mountain bike jersey with light insulationThanks to the durability needed for your mountain adventures and the light insulation for colder mornings, the Defend Thermal jersey lets you confidently tackle the toughest trails while staying pleasantly warm. The stretch fabric with channels provides insulation, greater lightness, and moisture-wicking action, keeping your body warm and dry. Need trail-specific features? The nylon DWR coating on the elbows and the longer back design improve abrasion resistance, while the loose fit lets you wear elbow pads whenever you want to push your limits.