A minimalist jacket that stands up to maximalist weather. The stripped-back Mammut Masao Light jacket is made of lightweight fabric and folds down small in a stuff sack to hide away in your backpack. But it still provides bomber protection from rain and wind, thanks to the internal DryTechnology Performance waterproof-breathable membrane.
- Made of lightweight yet durable nylon with a DryTechnology Performance waterproof-breathable membrane.
- YKK Aquaguard front zipper keeps rain out.
- Helmet-compatible hood has a reinforced brim and adjustments for visibility.
- Zippered hand pockets are compatible with your climbing harness or backpack hipbelt.
- Underarm zippers for venting when you're working hard.
- Pre-shaped sleeves promote range of motion for climbing.
- Asymmetric cuffs add coverage with elastic on one side for a snug fit.
- Drawcord hem seals out the weather.
- Includes a low-profile stuff sack.
- Athletic fit.
Fabric waterproof rating
The standard test for waterproof fabrics uses a standing column filled with water. The figures given are the water column height. A rating of 3,500mm or higher can be considered waterproof. The higher the rating, the more durable the waterproof fabric will be over time.
Waterproof garments use waterproof-breathable technologies and are fully seam-taped. Water-resistant garments use waterproof-breathable technologies but their seams are not taped. Water-resistant garments repel water and protect against wind but are not made of waterproof fabric.
|Waterproof with fully taped seams|
Fabric active breathability
The rate at which a waterproof breathable fabric expels moisture when the inner surface is moist from perspiration. Values under 8,000g/m2/24h provide low performance, 20,000g/m2/24h provide moderate performance and values over 30,000g/m2/24h provide high performance.
|Pockets||2 front zippered|
A windproof garment does not allow any air to permeate the fabric. A garment with windproof panels has panels of fabric that are totally windproof, but the rest of the garment may not be windproof. A wind-resistant garment resists some wind, but not as much as a garment that is windproof.
Durable water repellency
Usually referred to as DWR. A treatment made to fabrics that causes water to bead and run off instead of soaking through.