Looking to replace that old down midlayer? The Ultralight Aero Insulator uses premium synthetic insulation and lightweight 100 percent recycled nylon fabric. The insulator features no external baffling for increased loft and warm air retention. It packs down small into the left-hand pocket, making it a touring-friendly layer, especially when you’re lugging up all your equipment. Plus, it works well as a warm-weather outer layer. Grab it anytime, any day of the season.
Explore the 2024 FREESKIER Buyer’s Guide
CHECK OUT MORE OF THE BEST Midlayers OF 2025
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Looking to replace that old down midlayer? The Ultralight Aero Insulator uses premium synthetic insulation and lightweight 100 percent recycled nylon fabric. The insulator features no external baffling for increased loft and warm air retention. It packs down small into the left-hand pocket, making it a touring-friendly layer, especially when you’re lugging up all your equipment. Plus, it works well as a warm-weather outer layer. Grab it anytime, any day of the season.
Explore the 2024 FREESKIER Buyer’s Guide
CHECK OUT MORE OF THE BEST Midlayers OF 2025
