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

Sitka Kelvin Aerolite Jacket for Lightweight Warm-When-Wet Performance

Ultralight Warmth for Sudden Temperature Drops

In the mountains, conditions can shift in minutes. Clear skies give way to sleet. A calm glassing session turns into a wind-lashed wait. The Sitka M’s Kelvin Aerolite Jacket is built for those unpredictable moments—delivering maximum warmth with minimal bulk when temperatures plummet.

Engineered for hunters who refuse to be caught off guard, the Kelvin Aerolite combines cutting-edge synthetic insulation with a highly compressible design. It disappears into your pack when not needed and deploys instantly when cold weather sets in.

Advanced Synthetic Insulation with Warm-When-Wet Reliability

At the heart of the Kelvin Aerolite Jacket is PrimaLoft® Gold insulation with Cross Core™ technology. This innovative blend replicates the warmth and compressibility of down while maintaining performance in wet conditions. Unlike traditional down, it continues insulating even when moisture enters the equation.

The insulation is infused with silica aerogel—an ultra-light material composed of more than 95% air. This nearly weightless structure enhances thermal efficiency without adding bulk, creating a jacket that traps heat with remarkable efficiency for its weight.

Weather-Resistant Shell Built for Mountain Use

The exterior features a durable 27-denier polyester face fabric with a 27-denier polyester backer, finished with a durable water repellent (DWR) treatment. This construction resists precipitation and prevents the face fabric from wetting out during damp, cold hunts.

Gusseted stretch cuffs allow smooth layering and unrestricted shooting movement, while the fitted hood provides low-profile warmth without obstructing peripheral vision. Adjustable hem and hood systems seal out cold drafts and create a custom fit for demanding backcountry conditions.

Deep zippered chest and hand warmer pockets provide secure storage and comfort when glassing in frigid air.

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 backer fabric construction

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

• Lightweight, highly compressible design for packability

• Gusseted stretch cuffs for unrestricted shooting and easy layering

• Fitted hood offers low-profile warmth and peripheral visibility

• Adjustable hem and hood seal out cold drafts

• Deep zippered chest pocket for secure storage

• Zippered hand warmer pockets

• Total weight: 16 oz

• Style No. 50256

Built for Extreme Cold, Designed for Mobility

The Sitka M’s Kelvin Aerolite Jacket is purpose-built for big game hunters navigating volatile weather and demanding terrain. Lightweight, compressible, and warm even when wet, it provides reliable insulation without weighing you down.

Whether layered under a shell in a snowstorm or worn as a standalone insulation piece during crisp mornings, the Kelvin Aerolite is engineered to keep you moving when conditions turn unforgiving.

The Sitka M’s Kelvin Aerolite Jacket delivers high-efficiency synthetic insulation in a lightweight, packable design. Featuring PrimaLoft® Gold with Cross Core™ technology and aerogel infusion, it provides dependable warmth—even in wet conditions—making it an essential layer for unpredictable mountain hunts.