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Packable Warmth. Uncompromising Performance.
Temperature swings are inevitable throughout hunting season, but being unprepared doesn’t have to be. The BE:1 Reactor Puffy Jacket is designed to deliver on-demand warmth whenever conditions call for it, making it an essential piece in any serious hunter’s layering system.
At the heart of the Reactor is thermally mapped Sorona® Aura insulation, strategically placed to maximize warmth while minimizing bulk. With 80g insulation in the core and 60g in the arms and hood, the Reactor traps heat where you need it most while maintaining the mobility required for active hunts. The result is a lighter, warmer garment that packs down small and layers effortlessly beneath your outerwear.
Built with a durable nylon shell and a smooth, low-profile surface, the Reactor slides easily under jackets and bibs without the friction and bulk often associated with insulated layers. A DWR treatment helps shed light moisture and resist stains, while the soft peached lining enhances comfort during long days in the field.
The Reactor doesn’t stop at warmth. Featuring Carbon Alloy® technology, it actively adsorbs odors to help keep you undetected when close encounters matter most. An adjustable high-neck hood, articulated elbows, and an adjustable waist work together to seal in warmth, block wind, and provide unrestricted movement in any hunting scenario.
Five strategically placed pockets keep essential gear secure and accessible, making the Reactor just as practical as it is versatile.
Whether you’re facing a cold morning walk-in, a long sit in the stand, or unpredictable weather throughout the season, the BE:1 Reactor Puffy Jacket delivers lightweight warmth, scent control, and packable performance when you need it most.
Use your body measurements to find your perfect fit. See our How to Measure info and diagram below the size charts.
If you measure between sizes, or prefer a loose or a roomy fit for layering, we recommend upsizing.
| Size | Chest | Sleeve |
|---|---|---|
| Small | 34"-36" | 33" |
| Medium | 38"-40" | 34" |
| Large | 42"-44" | 35" |
| X-Large | 46"-48" | 36" |
| 2X-Large | 50"-52" | 37" |
| 3X-Large | 54"-56" | 38" |
Tall Sizes – 2″ Added to body length / 1.5″ added to sleeve length
| Size | Waist | Inseam |
|---|---|---|
| Small | 28"-30" | 32" |
| Medium | 32"-34" | 32" |
| Large | 36"-38" | 32" |
| X-Large | 40"-42" | 32" |
| 2XL | 44"-46" | 32" |
| 3XL | 48"-50" | 32" |
Tall Sizes – 2″ Added to inseam
| Size | Waist | Inseam |
|---|---|---|
| 30 Reg | 30" | 32" |
| 32 Reg | 32" | 32" |
| 34 Reg | 34" | 32" |
| 36 Reg | 36" | 32" |
| 38 Reg | 38" | 32" |
| 40 Reg | 40" | 32" |
| 42 Reg | 42" | 32" |
Tall Sizes – 2″ Added to inseam
| Size | Chest |
|---|---|
| XS | 31-32" |
| SM | 33-34" |
| MD | 35.5-36.5" |
| LG | 38.5-39.5" |
| XL | 42.5-43.5" |
| 2XL | 44-45" |
| Size | Waist | Inseam | US Size |
|---|---|---|---|
| XS | 24-25" | 29" | 0-2 |
| SM | 26-27" | 29.5" | 4-6 |
| MD | 28.5-29.5" | 30" | 8-10 |
| LG | 31.5-32.5" | 30.5" | 12-14 |
| XL | 34.5-35.5" | 31" | 16-18 |
| 2XL | 36-37" | 31.5" | 20 |
| Size | U.S. SIze |
|---|---|
| YS | 6-7 |
| YM | 8 |
| YL | 10-12 |
| YX | 14-16 |
| Size | Head Circ |
|---|---|
| M/L | 21.875”-23” |
| XL/2X | 23.5”-25” |
| Size | Palm Circ | Length |
|---|---|---|
| X-Small | 6.5-7" | 5.5-6" |
| Small | 7.25-7.75" | 6.5-7" |
| Medium | 8-8.5" | 7.25-7.75" |
| Large | 8.75-9.25" | 7.75-8.25" |
| X-Large | 9.25-10" | 8.25-9" |
| Size | Waist | Belt Length |
|---|---|---|
| Medium | 32"-34" | 44.75" |
| Large | 36"-38" | 48.5" |
| X-Large | 40"-42" | 52.25" |
| 2X-Large | 44"-46" | 56" |
| 3X-Large | 48"-50" | 59.75" |
| Size | Men | Women |
|---|---|---|
| SM | 4-6.5 | |
| MD | 5.5-8.5 | 7-9.5 |
| LG | 9-12 | 10-12.5 |
| XL | 12.5 |
Bend your elbow and put your hand on your hip. Measure from the center of the back of your neck, along the shoulder and down the elbow to the wrist bone.
Measure around the fullest part of your chest while keeping the measuring tape horizontal.
Measure around your waist where your pants typically sit while keeping the tape horizontal.
Measure from the crotch down to your leg where you like your pants to fit. Typically around the ankle.
With hand partially closed, measure over the knuckles, around the hand, excluding the thumb.
With Measure from the most prominent part of the forehead (often 1-2 fingers above the eyebrow) around to the widest part of the back of your head.
Sock sizing is based on your shoe size. Find your shoe size on the size chart to determine which sock size is best for you.
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