A bivouac sack for the twenty-first century, it’s 100% seam taped for waterproofness and durability, weighs in at under a pound, and compresses like magic into any pack. High-tech Marmot MemBrain® fabric breathes easily while blocking wind and water: The Alpinist Bivy offers awesome minimalist protection for climbers and backcountry adventurers who must travel light.
FEATURES
- Marmot MemBrain® Waterproof/Breathable Fabric - Marmot MemBrain, Waterproof/Breathable Fabric
- Fully Seam Taped
- Highly Compressible
- Storm Flap
SPECS
- Size: One Person
- Maximum Weight: 15 oz / 0.4 kg
- Minimum Weight: 14 oz / 0.4 kg
- Dimensions: 8x36x86in / 20x91x218cm
- Packed Size: 6 x 9 in / 15 x 23 cm
- Tent floor Material: 40d 100% Nylon Ripstop 3000mm W/R, F/R
- Tent canopy Material: MemBrain®Strata™ 100% Nylon Ripstop 2.2 oz/yd
TECHNOLOGY
MemBrain Strata
Marmot’s own lightweight waterproof / breathable technology. A lamination technology that rates a whopping 20,000mm in waterproof performance and 20,000 gr in breathability.
Requiring neither lining nor 3-layer construction like many similar lamination processes, MemBrain® Strata™ products are by far the lightest, most breathable garments in their categories.
Marmot’s proprietary 2.5 layer MemBrain® Strata uses micro non-organic particles on the inside of the lamination to increase durability and provide a dry touch instead of that clammy feeling you get from some other products.
The back print pattern is carefully designed to achieve the maximum durability and breathability. Abrasion tests rate 4-5 times better than regular MemBrain® (which is why regular MemBrain, as well as all 2-layer laminates require a separate lining).
Compared to 2.5 layer coatings in the market, our 2.5 layer lamination is about 100% more breathable. In addition, laminated stretch fabrics stretch more and have a softer hand than 2.5 layer coated fabrics.
VIDEO REVIEW
Alpinist Bivy
Watch Tonya and Brad Clement s review the Alpinist Bivy, while climbing Andrews Glacier Gorge in Rocky Mountain National Park, CO.
PRESS REVIEW
Backcountry magazine (US) October 2009
Alpinist Bivy
For Backup Protection on solo missions, and for traveling as light as possible, Marmot’s Alpinist Bivy is breathable and waterproof insurance against wind, snow, and rain. It packs up small, weighs less than a pound, and while a tent offers more comfort for sleep, this bivouac will keep the weight off your feet. This is a minimalist, form-fitting shelter – not for the claustrophobic.
