Hitting technical terrain: pure trail running fun… as long as you're not weighed down by your gear. Their lightest, most breathable trail running hoodie protects you on exposed trails and adapts to changing conditions. Canim ripstop fabric resists wind and moisture, Permair 20 panels promote ventilation, and the sleek, adjustable hood adds protection. Packed in its pocket, this jacket is easy to forget about. Until you need it.