Best jacket if you are going to live in very low temperatures condition like -35 to -40.
U won’t even need a lining inside the jacket. Keeps you warm all the time. Light weight water proof
I used this product on Kang Yatse II in August end. Temperature were cold, maybe around -15 after base camp. The windspeed was mild so did not need a shell over it.
I recommend it for people going above snowline or sub zero temperatures as it's a much better alternate to heavy synthetic jackets and you don't feel it's weight in your bag.The main fabric is ripstop which is good and it has a new technology of stitchless compartments which reduced down loss and also heat loss. It's snow repellent but not waterproof and also not windproof. A shell jacket to be worn if going anywhere gusty. Ideal for High altitude treks and expeditions. Don't think it's suitable above 7000m.