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As dark clouds fill the sky, take solace in the fact that you are wearing the preeminent waterproof, breathable alpine mountaineering bib, the Mammatus Bib from The North Face. Stay safe from wintry weather in lightweight, yet super-durable seam-sealed GORE-TEX Pro Shell for ultimate that's reinforced with rub- and tear-resistant Keprotec fabric. Specifications based on size Medium.

Ready for anything and built to withstand the harshest of alpine conditions, The North Face Mammatus Bib for Women will get you to the summit and back in bomber fashion. Built with GORE-TEX® Pro 3L fabric and utilizing Keprotec® Kevlar® fabric in ankle kickpatch zones, the Mammatus Bib will keep you dry even in the burliest of environments. With a performance fit, adjustable suspenders, full side zips and the new Crescent Drop Seat these bibs will move with you and not interfere with layers or your harness. When the weather turns and you are stuck out in it, you can rely on the Mammatus to get you home from your epic adventures.
Waterproof breathable Gore-Tex Pro fabric and fully taped seams make The North Face Women's Mammatus Bib stout enough for the wettest days of your mountaineering season. Alpine-ready features like a Crescent Drop Seat zipper make your days above snowline more comfortable than ever before. The North Face protected the insteps with Keprotec patches, so you don't tear them up with your freshly sharpened crampons. And thanks to the medium-height bib design, these pants work exceedingly well in ultra-deep snow.
This description was also provided by: Backcountry.com

Built with extremely durable Gore-Tex® Pro Shell, the Mammatus Bib is the preeminent alpine mountaineering bib for excursions in harsh conditions. Providing waterproof, breathable, fully seam sealed protection in critical environs, elite athletes rely on these pants for epic adventures.
No description provided.
| Additional fabric: | 72% nylon / 28% Kevlar |
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| Avg Weight: | 700 g (24.6 oz) |
| Breathable Rating: | Guaranteed |
| Fabric: | body: 70D 150 g/m² (4.4 oz/yd²) Gore-Tex® |
| Gaiters: | No |
| Inseam: | 30.5 inches |
| Manufacturer Warranty: | Lifetime |
| Material: | [Shell] Gore-Tex Pro; [Lining] nylon |
| Pockets: | 2 Thigh, 1 front |
| Recommended Use: | Alpine climbing, ice climbing, mountaineering |
| Seam Taped: | Yes, fully |
| Secondary fabric: | 95% polyester / 5% Spandex |
| Shell fabric: | nylon plain weave |
| Side Zips: | No |
| Venting: | No |
| Waist: | Suspenders |
| Waterproof Rating: | Guaranteed |
| Waterproofing: | GORE-TEX Pro Shell |
| Weight: | 24.6oz (700g) |
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View other products from The North Face classified in Women's Clothing > Pants. View all products from The North Face.
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Sometimes, we can't be sure that the product is the same across the stores that offer its, so you may find the same product listed more then once on GearBuyer.com, we these list highly similar products below.
| The North Face Mammatus Jacket | $549.00 |
Sometimes brands make complementary products for the opposite gender that coordinate with this product, we also try to show these products below.
| The North Face Mammatus Bib - Men's | $398.95 - $399.00 | |
| The North Face Mammatus Jacket - Men's | $299.37 - $549.00 |
These are products that have been indicated being comparable to this product:
| The North Face Fembot Bib Pant Women's Clothing > Pants | $139.48 | |
| Orage Maya SE Insulated Pant Women's Clothing > Pants | $89.98 - $107.97 | |
| Salomon Response Pant Loose Women's Clothing > Pants | $55.89 - $83.97 |
This product is available in the following colors:
Click any color to show the product in that color
| Black |
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Move with Mammatus | |
| Rating: | ![]() |
The Mammatus bibs are incredible all around mountain performance pants. TNF covered every single detail with these. They are reasonably lightweight, with good stretch for movement, and combine all that with solid gore-tex protection from snow, ice, wind etc to make these extremely high performance versatile ski pants. They have a great drop seat that many other ski/mountain pants tend to lack for women, excellent heighth adjustable sturdy straps, powder boot protectors with interior hooks, good pocket placement, crampon protection patches, and perfectly sized side zips for ventilation if needed. The pants also have a great feminine sleek fit and have a softer, stretch material for the upper bib that allows for chest expansion and upper body movement. These pants can be used absolutely for mountaineering but also for ski touring, ice climbing, and resort skiing as well. I'm 5'8 and wear a women's medium. LOVE them! | |
| Kim Havell at Backcountry.com on 12/01/2008 | |
totally worth it! | |
| Rating: | ![]() |
flattering and very functional. these dont always come together in the elusive womens goretex bib category. i use them ice climbing, ski touring. on cold days and hot - they vent well and the drop seat works flawlessly with harness or on the fly. i love these pants and have used different versions for over a decade. these are my favorites! | |
| kasha Rigby at Backcountry.com on 03/26/2009 | |
Not perfect enough | |
| Rating: | ![]() |
I bought these pants but returned them. | |
| Trinka Gillis at Backcountry.com on 06/22/2009 | |