Freight train comin'

Built solid as a dump truck, the Bellows Jacket’s ample cargo capacity will carry you from first lift to last, clock-in to punch-out without the need to refuel.



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The Bellows Jacket is the unflappable TREW workhorse, designed for mountain professionals who put serious hours on the clock and their gear. It offers cavernous storage in a straightforward, utilitarian design, and features our new Private Reserve 3L fabric with reinforcements in high-wear and high-stress areas. Longer and roomier than the minimalist Cosmic, but shorter than the Pow Funk, the Bellows features an updated, articulated fit that enhances mobility while still leaving room for layers. Hard-shredding, hard-partying individuals whose schedules revolve around maximum PTO (Powder Time On) will appreciate the Bellows Jacket’s pragmatic approach to getting down.


  • NEW Private Reserve 3L fabric
  • Rugged, smooth 140-denier nylon plain-weave w/ DWR
  • 20k/20k waterproof/breathable DERMIZAX EV membrane 
  • Supple 20-denier nylon tricot backer
  • NEW Articulated fit with reinforced panel construction 
  • NEW YKK Aquaguard® VISLON center front zipper with full storm flap
  • NEW low-profile pleated cuff design
  • Ergonomic powder skirt with 3-point pant attachment 
  • Adjustable, helmet-compatible fixed hood
  • Dual zippered handwarmer pockets
  • Dual oversized bellows chest pockets
  • Dual internal mesh drop pockets
  • Wrist pass/stash pocket 
  • Flap-accessed Napoleon pocket with cord port 
  • Cord control loop at collar
  • Microsuede chin guard
  • YKK Aquaguard® zippers on all exposed openings
  • 30 ounces


TREW builds for the rigors of backcountry freeriding, using materials and construction methods that reflect our commitment to quality, durability, and innovation. We work closely with our factory during all stages of development and production to ensure consistency with our highest standards, with the constant goal of making our garments lighter, better fitting, and more functional without sacrificing durability.  


Private Reserve 3-Layer Fabric

Private Reserve 3L blends rugged durability with lightweight performance and flexible comfort. After two years of development and testing, we are proud to offer this proprietary waterproof breathable fabric in all of our hardshell garments. 

FACE: 140-denier nylon plain-weave with a Durable Water Repellent finish

By employing a high-density weave, our face fabric that not only feels smoother and softer, but it sheds snow and water better than ever. Despite its supple hand, Private Reserve 3L retains our trademark durability and high-abrasion resistance. 

DERMIZAX® EV is a proven and highly versatile 20k/20k-rated waterproof breathable polyurethane laminate manufactured specifically for heavy-duty applications. Its vapor-permeable hydrophilic structure allows water vapor to pass through, and expands as your body temperature rises to increase breathability during heavy exertion. It is 100% windproof, and does not lose its waterproofing performance when stretched repeatedly over time.   

BACKER: 20-denier nylon tricot knit

Our internal backer is a smooth, 20-denier nylon tricot that not only lends a new level of comfort to our durable hard shell garments, but offers enhanced breathability and wicking performance compared to our previous backing fabric. 


The TREW Lifetime Warranty:
TREW confidently stands behind our manufacturing, and we guarantee TREW products against defects for the full lifetime of the product. 
We will immediately repair or replace any defective product discovered upon receipt by the customer.  In addition, if any TREW product does not meet satisfactions with intended performance and function, return it to us for a full refund, repair, or replacement at our discretion.