Mammut Aenergy IN Hooded Jacket - Men´s

Aenergy IN Hooded Jacket delivers ultralight, packable down warmth for high-output mountain pursuits

What Our Gearhead® Experts Are Saying:

"This jacket is impressively warm for how lightweight it is. The responsibly sourced hydrophobic down keeps me insulated even in damp conditions, and the ultralight recycled nylon shell allows it to pack down small in my pack. I love the climbing-harness-compatible pockets and the snug-fitting hood—perfect for technical mountain missions or just staying warm on the go."

Fast, light, and warm—the Mammut Aenergy IN Hooded Jacket is designed for mountain athletes who demand peak performance from their gear. As Mammut’s lightest insulated jacket, it delivers powerful warmth without unnecessary bulk, thanks to its responsibly sourced, water-resistant down insulation. The down expands fully beneath an ultralight recycled nylon shell, providing optimal heat retention while remaining highly packable.

Built for technical pursuits, this jacket features pre-shaped sleeves for mobility, harness-compatible zippered pockets, and an elastic-bound hood for extra coverage. When not in use, it stows into its own pocket, making it an easy-to-carry backup for unpredictable alpine conditions. Whether layering under a shell or wearing it solo, the Aenergy IN Hooded Jacket is the go-to choice for those who move fast in the mountains.

Details

• Ultralight, packable insulated jacket for alpine and backcountry adventures
• 90% responsibly sourced hydrophobic goose down retains warmth even when damp
• Recycled nylon shell is lightweight, durable, and wind-resistant
• Pre-shaped sleeves enhance mobility for technical mountain activities
• Two harness-compatible zippered pockets for easy access to essentials
• Elastic-bound hood provides added warmth and protection
• Packs into its own pocket for efficient storage on the go
• Item #MAMU5XW

Tech Specs

Material

100% recycled nylon

Insulation

down

Fit

regular

Length

hip

Hood

yes

Pockets

2 zippered hand

Venting

full-length front zipper

Activity

skiing, snowboarding, hiking, camping, travel, casual

Manufacturer Warranty

limited 2 years