An outer material used for the manufacture of sleeping bags and down or man-made fibre-filled jackets and windbreakers. DWR water repellent treatment increases resistance to moisture penetration.
Weight: 40 g/m2
Windproof: 90%
Breathability: 90%
Water repellency: 350 mmH2ODWR
Fabric: 100% polyester
Other materials developed and used by Sir Joseph can be found here
-23% Off 
An ultra-light, ultra-packable quilt for the comfort of summer nights. Sleeping bags of the “blanket” type without a zipper and with a reduced bottom
partly to save weight and volume and to sleep comfortably just on a mat or in a hammock. Can also be used as a blanket in the car, at the airport…
Down slippers for your tent and sleeping bag for maximum thermal comfort while resting on all your trips and expeditions.
Insulated expander for expectant mothers and mothers and fathers who wear their baby in a sling or manduc. Divide
for the warmth of their down and wool jackets and vests.
