Mammut Aenergy Light ML Hooded Men's Fleece Jacket Silver Sage-Strata

For alpine athletes who refuse to let a midlayer slow them down, the Aenergy Light ML Hooded redefines what a technical fleece can be. Its Pontetorto Tecnostretch fabric offers a rare combination of four-way stretch, high breathability, and featherlight warmth, making it the go-to layer for ski touring, mountaineering, and fast-paced ascents. At just 280 g (size L), it packs down small yet delivers reliable insulation when the wind picks up.

Highlights

• Pontetorto Tecnostretch: 89% polyester, 11% spandex for superior stretch and recovery.
• High breathability and moisture wicking keep you dry during high-output activities.
• Snug-fitting elasticated hood fits comfortably under a helmet.
• Two zippered side pockets positioned above the harness and backpack hip belt.
• Full-length YKK front zipper with chin guard.
• Thumb loops keep sleeves in place.
• UPF 50+ protection.
• bluesign® certified and contains recycled polyester.

In daily use

Designed for the vertical world, the Aenergy Light ML Hooded excels as a midlayer during ski touring and mountaineering. Its high breathability ensures you won’t overheat on the ascent, while the stretch fabric moves freely with your body. The close-fitting hood adds extra warmth without interfering with a helmet, and the strategically placed pockets remain accessible even when wearing a climbing harness or backpack. The thumb loops offer a secure fit and prevent the sleeves from riding up.

Full specifications

• Brand: Mammut
• Model: Aenergy Light ML Hooded
• MPN: 05541-1303-115
• EAN: 7619876672100
• Product Type: Fleece Jacket / Midlayer
• Gender: Men's
• Fit: Athletic Fit
• Main Material Composition: 89% Polyester, 11% Spandex
• Insert Material Composition: 100% Polyester
• Fabric Technology: Pontetorto Tecnostretch
• Weight (Size L): 280 g
• Hood Type: Snug-fitting, elasticated
• Pockets: 2 zippered side pockets (backpack and climbing harness compatible)
• Zipper Type: Full-length YKK front zipper
• Thumb Loops: Yes
• Stretch: 4-way stretch
• Breathability: High
• Moisture Wicking: Yes
• Sustainability Certifications: bluesign® PRODUCT, Recycled Content
• Recommended Activities: Ski Touring, Mountaineering, Hiking, Trail Running
• UV Protection: UPF 50+
• Color: Silver Sage-Strata
• Size: L
• Collar Type: Hooded

Final note

Light, stretchy, and breathable—the Aenergy Light ML Hooded is the midlayer that keeps you moving, whether you're skinning up a couloir or scrambling a ridge.