Sitka M’s Kelvin Aerolite Vest – Lightweight Insulated Hunting Vest

Sitka Kelvin Aerolite Vest for Packable Warm-When-Wet Performance

Core Warmth When Conditions Collapse

There’s a point on every hunt when the air shifts and the temperature drops faster than expected. The wind sharpens. The shadows lengthen. The Sitka M’s Kelvin Aerolite Vest is built for that exact moment—deploying instant core warmth without weighing you down.

Designed for mountain hunters who demand efficiency, the Kelvin Aerolite Vest delivers maximum insulation with minimal bulk. It packs small, layers cleanly, and provides dependable warmth even when moisture creeps into the equation.

Advanced Synthetic Insulation with Down-Like Compressibility

At the center of the Kelvin Aerolite Vest is PrimaLoft® Gold insulation with Cross Core™ technology. This innovative synthetic blend mirrors the warmth and compressibility of down while maintaining critical warm-when-wet performance.

Infused with silica aerogel—an ultra-light material composed of more than 95% air—the insulation increases thermal efficiency without adding unnecessary weight. The result is high-output warmth in a remarkably lightweight package built for demanding backcountry conditions.

Durable, Weather-Resistant Shell Construction

The exterior is constructed with a 27-denier polyester face fabric and 27-denier polyester backer, treated with a durable water repellent (DWR) finish. This helps resist precipitation and prevents the face fabric from wetting out during damp, cold hunts.

Deep zippered chest and hand warmer pockets provide secure storage and comfort while glassing or moving through exposed terrain. Whether layered under a shell or worn as an outer piece during cool mornings, the Kelvin Aerolite Vest is engineered for adaptable performance.

Key Features:

• PrimaLoft® Gold insulation with Cross Core™ technology delivers down-like warmth and compressibility with warm-when-wet performance

• Insulation infused with silica aerogel for enhanced thermal efficiency

• 27-denier polyester face and 27-denier polyester backer construction

• Durable water repellent (DWR) finish resists precipitation and wetting out

• Lightweight, highly compressible design for easy packability

• Deep zippered chest pocket for secure storage

• Zippered hand warmer pockets

• Weight: 9.6 oz

• Style No. 50258

Built for Unpredictable Mountain Conditions

The Sitka M’s Kelvin Aerolite Vest is purpose-built for big game hunters who need dependable core warmth without bulk. Lightweight, compressible, and warm even when wet, it adapts quickly to changing weather and disappears into your pack when not needed.

From early-season glassing sessions to late-season cold snaps, the Kelvin Aerolite Vest delivers efficient insulation that works as hard as you do.

The Sitka M’s Kelvin Aerolite Vest provides lightweight, packable insulation powered by PrimaLoft® Gold with Cross Core™ technology. With aerogel-enhanced warmth and weather-resistant construction, it delivers reliable core protection in extreme and unpredictable hunting conditions.