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BE:1 Reactor Puffy Pant
18” side seam zipper
Soft peached lining.
Lightweight Warmth When Conditions Demand More
When temperatures drop, the right insulation layer can make all the difference. The BE:1 Reactor Puffy Pant is built to deliver packable, low-bulk warmth that keeps you comfortable during cold sits, long walks, and unpredictable conditions without sacrificing mobility or adding unnecessary weight.
Powered by 60g Sorona® Aura insulation, the Reactor Puffy Pant delivers exceptional warmth for its weight, keeping you comfortable in colder conditions while maintaining a streamlined fit. Unlike bulky insulated pants that restrict movement, the Reactor is designed as a versatile layering piece that moves with you and packs down easily when not in use.
The durable nylon woven ripstop shell stands up to the demands of the hunt, while a soft peached lining adds next-to-skin comfort. A DWR treatment helps shed light moisture and resist stains, ensuring the Reactor performs when conditions become less than ideal.
Built for hunters who demand stealth, the Reactor Puffy Pant incorporates Carbon Alloy® technology to adsorb odors and help keep you undetected in the field. Whether you’re layering beneath your outerwear for a late-season sit or adding warmth on a cold morning hike, the Reactor helps maintain your concealment while maximizing comfort.
Practical field features include an elastic waistband with an adjustable internal drawcord, two secure invisible zipper waist pockets, and a center-front fly zipper for convenience. An 18-inch side seam zipper allows for quick and easy on/off over base layers or hunting boots, while rib knit lower leg cuffs help seal in warmth and maintain a secure fit.
Designed to be packed, layered, and deployed whenever temperatures demand it, the BE:1 Reactor Puffy Pant delivers the warmth, mobility, and scent control serious hunters need throughout the season.
Packable. Lightweight. Ready when you need it most.
- Carbon Alloy® for maximum odor adsorption
- 60g Sorona® Aura insulation for warmth without bulk and maximum packability
- DWR treatment helps shed moisture and resist stains
- Durable nylon woven ripstop outer fabric with a soft peached lining
- Invisible zipper for the center front fly
- Two invisible zipper front waist pockets
- Elastic waistband with internal drawcord that can be tied inside or outside the waistband
- Rib knit bottom hem at lower back leg
- 18” side seam zipper for easy on/off
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Questions & Answers
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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.
MEN'S JACKETS & TOPS
| 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
MEN'S ALPHA PANTS & BOTTOMS (S - 3XL)
| 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
MEN'S NUMERIC PANTS
| 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
WOMEN'S JACKETS & TOPS
| 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" |
WOMEN'S PANTS & BOTTOMS
| 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 |
YOUTH OUTERWEAR
| Size | U.S. SIze |
|---|---|
| YS | 6-7 |
| YM | 8 |
| YL | 10-12 |
| YX | 14-16 |
BE:1 INSULATED HAT & BOMBER HAT
| Size | Head Circ |
|---|---|
| M/L | 21.875”-23” |
| XL/2X | 23.5”-25” |
GLOVES
| 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" |
BELTS
| 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" |
SOCKS
| 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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