"What Our Gearhead® Experts Are Saying:""I’ve worn the MTN-X Canyon 3L Light Jacket for everything from trail runs in rain to steep skin tracks, and it’s seriously impressive. It breathes better than most 3-layer shells I’ve tried, moves with me thanks to the 4-way stretch, and packs down light without sacrificing weather protection.""When we're moving fast through the mountains, we need gear that can keep pace without holding us back. The MTN-X Canyon 3L Light Jacket is built for just that—balancing waterproof protection with breathability and dynamic movement for high-output pursuits. Whether we’re climbing switchbacks in a storm or skinning through gusty ridgelines, this ultralight shell keeps us dry, cool, and unrestricted. Constructed with eco-conscious Prime™ Motion 3-layer fabric, the Canyon features 100% recycled polyester, PU lamination, and 4-way stretch for complete freedom in technical terrain. A 20K waterproof rating keeps weather at bay, while the 25K breathability ensures airflow on the move. It’s helmet compatible, vented, and loaded with performance details—from the fog-free placket to the articulated fit. Lightweight, protective, and purpose-built, it’s the shell we grab when speed and versatility matter most."