

"What Our Gearhead® Experts Are Saying:""This fleece is my go-to midlayer when the temperature drops. The Polartec® Thermal Pro® fabric is incredibly warm for how lightweight it is, and I love how fast it dries after a long day on the mountain. The flat seams keep things comfortable under a pack, and the zippered pockets are perfect for stashing essentials. Whether layering up for the slopes or wearing it on its own, this jacket is a winter essential.""From crisp morning hikes to après-ski lounging, the Mammut Arctic IV ML Jacket delivers the warmth and comfort we need for cold-weather adventures. Made with high-performance Polartec® Thermal Pro® fleece, this midlayer offers an excellent warmth-to-weight ratio while remaining breathable and fast-drying. Whether we’re layering it under a shell or wearing it solo, the soft, lofted structure traps heat while resisting pilling for long-term durability. Designed for performance, this fleece features flatlock seams to prevent chafing under a pack, zippered pockets for secure storage, and elastic cuffs and hem for a snug fit. Whether we’re hitting the slopes, hiking in brisk conditions, or enjoying a relaxed day outdoors, the Arctic IV ML Jacket is a dependable go-to for all things winter."
Price: $129.35 from Backcountry
| Merchant | Price | |
|---|---|---|
| $129.35 | Visit Store |
"What Our Gearhead® Experts Are Saying:""This fleece is my go-to midlayer when the temperature drops. The Polartec® Thermal Pro® fabric is incredibly warm for how lightweight it is, and I love how fast it dries after a long day on the mountain. The...
"What Our Gearhead® Experts Are Saying:""This fleece is my go-to midlayer when the temperature drops. The Polartec® Thermal Pro® fabric is incredibly warm for how lightweight it is, and I love how fast it dries after a long day on the mountain. The...
The Mammut Arctic IV ML Hooded Jacket might just be the last fleece you'll ever need to buy, seemingly pulling off the tight rope walk between cozy casual hoodie and versatile mid-layer for long days in the outdoors. The hi-loft Polartec Thermal Pro Fleece...