Insulated jacket
Overview
An insulated jacket is a midlayer or outer layer containing synthetic or down insulation, used to provide warmth during rest periods, cool conditions, or around camp.
Key points
- Available with down or synthetic fill, each with different performance characteristics.
- Often used primarily during breaks and at camp rather than during high-exertion hiking.
- Warmth-to-weight ratio, compressibility, and moisture performance are key selection factors.
- Hooded versions can extend coverage and reduce heat loss.
- Serves as a core component of many three-season layering systems.
Details
Insulated jackets are central pieces in many thru-hiking clothing systems. They provide a compact source of warmth for cooler mornings, rest breaks, and evenings at camp. By adding insulation around the torso and arms, they complement base layers and shell layers to create a versatile combination that can adapt to a range of conditions.
Down jackets are valued for high warmth-to-weight ratios and compressibility, making them easy to pack into small spaces. Synthetic-insulated jackets, while often bulkier for the same warmth, can maintain more of their insulating value when damp and may dry more quickly in some situations.
Hikers choose specific models based on expected temperatures, precipitation patterns, and personal comfort. Features such as hoods, adjustable hems, and pocket placement all influence how a jacket works within a broader system. Many hikers keep their insulated jacket dry and reserved primarily for rest to maintain a reliable warmth layer.
Over time, individuals refine how much insulation they carry based on experience with cold tolerance and the climates they encounter. For some routes, a lightweight piece is sufficient; for others, especially shoulder-season or high-elevation trips, a warmer jacket is preferred.
Related topics
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