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The Sitka Kelvin Aerolite Jacket provides packable, synthetic insulation that retains warmth even when wet—ideal for cold, unpredictable hunts.
In a sea of outdoor specialization, having versatile gear as well is a strength. This lightweight, compressible jacket maximizes warmth while minimizing bulk. Use it for everything from backcountry hunts and off-season scouting trips to everyday life; it slips comfortably under a shell whenever you need an extra shot of warmth. Synthetic PrimaLoft® Gold Insulation with Cross Core™ technology replicates the aesthetics and performance of down insulation, but with warm-when-wet performance.
Weight: 16 oz.
Synthetic PrimaLoft® Gold Insulation with Cross Core™ technology replicates the warmth and compressibility of down, but with the benefit of warm-when-wet performance
Lightweight insulation (35% recycled) is infused with silica aerogel, a nearly weightless material that’s composed of more than 95% air and acts as additional thermal insulation
20-denier polyester face with durable water repellent finish, 20-denier polyester backer
DWR finish resists precipitation and prevents face fabric from wetting out
Gusseted stretch cuffs allow for smooth, easy layering and unrestricted shooting
Fitted hood provides low-profile warmth and concealment; doesn’t obstruct peripheral vision
Deep, zippered chest pocket safely stores your valuables
Imported
MEN'S
| SIZE | CHEST | SLEEVE |
|---|---|---|
| Small | 36" – 38" | 33" |
| Medium | 39" – 41" | 34" |
| Medium Tall | 39" – 41" | 36" |
| Large | 42" – 45" | 35" |
| Large Tall | 42" – 45" | 37" |
| X-Large | 46" – 49" | 36" |
| X-Large Tall | 46" – 49" | 38" |
| 2XL | 50" – 53" | 37" |
| 2XL Tall | 50" – 53" | 39" |
| 3XL | 54" – 57" | 38" |
| SIZE | WAIST | REG | TALL |
|---|---|---|---|
| 30” | 30” | 31" | – |
| 31” | 31” | 31" | – |
| 32” | 32” | 31" | 33" |
| 33” | 33” | 32" | 34" |
| 34” | 34” | 32" | 34" |
| 35” | 35” | 32" | 34" |
| 36” | 36” | 33" | 34.5" |
| 37” | 37” | 33" | 34.5" |
| 38” | 38” | 33" | 34.5" |
| 40” | 40” | 33" | – |
| 42” | 42” | 33" | – |
| 44” | 44” | 33" | – |
| Small | 28” – 30” | 31" | 33" |
| Medium | 31” – 33” | 31" | 34" |
| Large | 34” – 37” | 32" | 34" |
| X-Large | 38” – 41” | 32" | 34" |
| 2-XL | 42” – 45” | 32" | 34" |
| 3-XL | 46” – 49” | 32" | 34" |
| SIZE | PALM CIRC | LENGTH |
|---|---|---|
| Medium | 8" – 8.5” | 7.5" – 8" |
| Large | 9" – 9.5” | 8.5" – 9" |
| X-Large | 9.5" – 10” | 9" – 9.5" |
| 2XL | 10" – 10.5" | 9.5" – 10" |
| SIZE | CALF CIRC | BOOT SIZE |
|---|---|---|
| M/L | 17.5" | US 6 – 10" |
| L/XL | 18.5” | US 10 – 14" |
HOW TO TAKE MEASUREMENTS

The Kelvin Aerolite Jacket is a "Cadillac" product offered by SITKA Gear concerning a synthetic insulation layer. The PrimaLoft Gold insulation with Cross Core technology permits a significantly warmer layering piece without the added bulk, ultimately enabling an outer shell to be worn over it with ease, such as a soft shell jacket or rain wear. This product is extremely versatile and packable, and should strongly be considered by any gear enthusiast or outdoor adventurer.