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FREE SHIPPING ON ORDERS +$125 (US ONLY)
The GT is a do-it-all jacket: keeps the elements out and body warmth in through a GORE-TEX shell and Thermagraph® Active lining system.
The only jacket that the Mammoth Unbound Park Staff trusts for over 200+ days on snow, the GT Jacket's durability has been upgraded with our exclusive Thermagraph® Active lining system to keep you going stronger and longer in any elements. A team favorite, the GT's durable GORE-TEX shell keeps the elements out while the Thermagraph Active® lining aids in heat and moisture management as your body heat changes throughout the day.
WATERPROOFING
BREATHABILITY
THERMAL RATING
FIT
TAPED SEAMS
Style: M5WN159
GORE-TEX
The Gold Standard in waterproofing. Guaranteed to keep you dry.
Air-Flo™ Vents
Vents that allow fresh air in and moisture out to help regulate your temperature.
Helmet Compatible
Hoods built to fit comfortably over a helmet.
Hoodlink
Keep gear in order when not in use by creating a packable system.
Key Clip
Made to keep your keys secure while on the mountain.
Lifetime Warranty
Backed by our Lifetime Warranty against defects in materials and workmanship. See details.
Phone Heater Pocket
A secure, accessible phone pocket that increases battery life in cold weather.
Recycled Fabric
Single-use plastic is used in the recycled yarn and the fabric is made of over 50% recycled cationic dyeable polyester.
Windproof
Fabric that doesn’t let the wind penetrate.
6-Pocket Design
Fully featured garments built around the classic 6-pocket design.
Thermagraph®
Strategic body-mapped insulation and breathability within the garment.
GORE-TEX
GORE-TEX guarantees you will stay dry and warm in any condition, for the life of your garment.
Thermagraph®
Thermagraph® technology is strategic body-mapped insulation and breathability to increase the versatility of your outerwear.
Taped Seams
The seam taping process prevents moisture intrusion by making the seams as waterproof as their surrounding fabric.
Hoodlink
The jacket is folded, rolled, and then the hood bungy tightens around the bundle to keep it that way.
PFAS Free DWR
C0 PFAS Free DWR (Durable Water Repellency) coating is the outermost finish applied to 686 fabrics for protection and waterproofing.
ALL OUTLET ITEMS ARE FINAL SALE. NO RETURNS OR EXCHANGES.
Free shipping on orders over $125 (US Only).
For eligible items, returns for a refund are accepted within 30 days from the shipment date.
We are committed to a continuous journey of improvement and positive contribution to the world we live and play in, and using our business as a force for good. B Corp Certification designates that we’ve met B Corp community standards of performance, accountability, and transparency on factors from employee benefits and environmental management to supply chain practices and input materials.
Learn more about out sustainability efforts HERE
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The GORE-TEX membrane is created as a series of pores. Each pore is 20,000 times smaller than a water drop, yet large enough for vapor to pass through. This creates the ultimate membrane for keeping the inside of your garment dry while still allowing moisture and perspiration to pass through, effectively regulating your body temperature while keeping you comfortable inside your jacket or pants. GORE-TEX guarantees you will stay dry and warm in any condition, for the life of your garment. All GORE-TEX fabrics are bluesign® approved, meeting the highest environmental standards.
Developed around your body in motion, our exclusive Thermagraph® technology places separate zones of insulation and breathability strategically throughout your jacket or pants. These zones work together to create an ultra-lightweight, warm, and highly breathable lining that increases versatility of your jacket and pants. Insulation zones are placed where your body needs warmth the most - your vital organs, spine, knees, and seat are surrounded by breathable, moisture wicking mesh to allow for the utmost moisture evaporation and body temperature regulation.
The seams where pieces of fabric are brought together are the most likely spot for moisture to intrude into a garment. The seam taping process prevents this by making the seams as waterproof as their surrounding fabric. Seams in 686 garments can be fully taped throughout the garment or taped only at critical areas to further ensure quality workmanship and guarantee waterproofing.
This creates a packable system to keep gear in order when not in use. It’s simple: the jacket is folded, rolled, and then the hood bungy tightens around the bundle to keep it that way. This creates organization and increases room in your pack. At the end of the day, you have a bonus roll to be used as a cushion, padding, or pillow.
C0 PFAS Free DWR (Durable Water Repellency) coating is the outermost finish applied to exclusive 686 fabrics increasing their contact angle and thus repelling water while maintaining high breathability. DWR also helps repel stains and oils that can damage your garment's surface.
– Articulated Fit
– Most find garment to be true to size
Found on our GORE-TEX and GLCR styles, articulation seams are placed in high mobility areas for comfort, room for layering, and to maximize mobility.
Designed to fit more like streetwear, this fit is slimmed down with less room for layering. Conforms more to the body shape and slimmed at the knee area, while still allowing movement.
A progressive and modern fit that combines a loose, roomy feel with a shorter length to pair nicely with our wide fit pants.