Mammut Aenergy Light ML Hooded Men's Fleece Jacket Acacia-Holunder

At just 280 grams, the Mammut Aenergy Light ML Hooded is a featherweight mid-layer that delivers exceptional warmth-to-weight ratio for high-output mountain pursuits. Crafted with Pontetorto® Tecnostretch fabric, this men's fleece jacket offers outstanding breathability and unrestricted four-way stretch, making it a versatile choice for ski touring, trail running, and high-alpine climbing.

Overview

This men's fleece jacket from Mammut's Aenergy Light series blends minimalist design with technical precision. The athletic fit contours the body while allowing full freedom of movement. A close-fitting hood with an elasticated border sits neatly under a climbing helmet, while the high collar adds extra warmth. Two YKK zippered hand pockets are strategically placed to avoid interference with a climbing harness, and integrated thumb loops keep the sleeves securely in place during dynamic use. The elasticated hem ensures a snug, stable fit even under a backpack or outer shell.

What stands out

• Pontetorto® Tecnostretch: 89% polyester, 11% spandex for optimal stretch and recovery
• Four-way stretch fabric that moves with you
• Athletic fit designed for layering and active movement
• Close-fitting hood with elasticated border
• 2 YKK zippered hand pockets, compatible with climbing harnesses
• Thumb loops to keep sleeves in place
• bluesign® PRODUCT certified sustainable construction

Technical details

• Material: 89% polyester, 11% spandex
• Fit: Athletic
• Hood: Close-fitting, elasticated border
• Collar: High collar
• Hem: Elasticated
• Pockets: 2 YKK zippered hand pockets
• Thumb loops: Yes
• Weight (Size M): 280 g

Our verdict

The Aenergy Light ML Hooded is a top-tier technical fleece for weight-conscious alpinists. Its breathable, stretchy fabric and thoughtful features make it an indispensable layer for fast and light adventures.