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A refined mid-layer for active mountain use, offering a precise balance of warmth, stretch and breathability.
Mammut says:
Delivering the warmth and comfort you need for a wide range of mountain sports, this lightweight hybrid jacket combines all the right fabrics with all the right features. Body-mapped insulation meets stretchy fleece for optimal temperature regulation and freedom of movement. Wind and abrasion resistant, it also packs down small and can be stowed in its own pocket. Rounded off with three zippered pockets and a fitted hood to wear under your helmet, it’s a dependable partner for big days outdoors.
Our Verdict
At 325g (Medium), the Rime Air IN Hybrid Hooded Jacket delivers a strong mix of insulation and mobility. The main body uses lightweight synthetic fill for dependable warmth, while the side and underarm panels stretch comfortably and help dissipate heat during sustained effort. The cut is athletic and well-judged for hiking, climbing, or ski touring, with no restriction when reaching or twisting. The hood fits neatly under a helmet, and the elastic hem and cuffs keep out draughts without feeling tight.
The jacket compresses into its own pocket for efficient packing, and the pockets sit high enough to stay clear of a harness or hip belt. Stitching and finish quality feel durable, and the PFC-free treatment shows Mammut’s continued focus on responsible design.
It excels as an active insulation piece for cool conditions, bridging the gap between a fleece and a lightweight synthetic jacket while maintaining the technical precision expected from Mammut’s alpine range.
- Reviewed by Basecamp Gear
Features
- Hybrid construction with stretch sections for additional freedom of movement and temperature regulation
- Extremely soft, lightweight, wind- and water-repellent material with a PFC-free DWR treatment
- Mammut LOOPINSULATION (40g/m²)
- Fitted hood can be worn under a helmet
- 2 backpack-compatible side zipper pockets
- Zippered inner pocket
- Elastic hem and cuffs for improved fit
- Small packing volume: Jacket can be stowed in the front right pocket
Specifications
- Small weighs: 313g
- Medium weighs: 325g
- Large weighs: 344g
- XLarge weighs: 387g
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Cut: Athletic Fit
Material & Construction
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Lining: 15D 100% Recycled Nylon Windbreaker
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Filling: 140 g/m² Mammut LOOPINSULATION
