When the clouds roll in and the wind picks up, this shell keeps your focus on the route, not the weather. Designed for technical terrain and unpredictable conditions, the Alto Guide provides reliable weather protection without compromising breathability or mobility. From wet shoulder-season hikes to early alpine pushes, it sheds rain, cuts wind and stays comfortable under a pack or harness. Stretchy 3-layer fabric moves with you, and every detail supports serious time in the mountains.
- Waterproof and breathable 3-layer Mammut DRY Tour fabric stands up to wet alpine weather and keeps sweat moving out
- PFC-free DWR sheds rain while lowering environmental impact
- Helmet-compatible hood with reinforced brim shields your vision when storms close in
- Water-repellent front and chest zippers help keep moisture out in sustained exposure
- Two high-set pockets stay accessible under a pack or harness for quick grab-and-go storage
- Underarm vents with water-resistant zips dump heat fast during high-output climbs
- Pre-shaped sleeves with hook and loop cuffs seal out drafts without restricting movement
- Adjustable drawcord hem cinches tight to block wind and keep the fit dialled
