It uses Marmot's own MEMBRAIN® Strata fabric with fantastic waterproof and breathable performance (see what marmot have to say about its technology below). The fabric also has an amazing amount of 4-way stretch and with its soft handle feels more like a soft shell than the out and out waterproof it really is.
The stretch in the fabric allows for a fantastic fit with anatomic articulation and assymetric velcro adjusted cuffs to give great freedom of movement. The simple style features 1 chest pocket and two hand pockets with concealed zippers that also assist in core ventilation if required. Weighing in at only 309g the Hyper Jacket has to be worth a look for lightweight performance.
MemBrain® Strata™ - what Marmot have to say
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.