This product preserves the breathing of technical materials and enhances the repellancy of water on the fabric. This is a great Eco-friendly alternative to other water repellents out in the market. Can be used on Gore-Tex, dri and other technical fabrics. Instructions: Clothing article should be clean and dry. Shake bottle well before use. Spray the article as evenly as possible. Let the waterproofing soak in for 15-20 minutes. Dry off extra wa terproofing with a damp cloth. Dry the article with help of a warm iron, warm air, sunlight or similar. Washing direc tionsfor the fabric MUST be followed. Empty, clean, and close the spray nozzle if you will use the bottle again. If the wa terproofing is not sprayed on evenly, the article can become discolored. This is easily removed by washing. The products are free from fluorocarbons and do not contain propellants that contribute to global warming or CFC gasses that destroy the ozone layer.
Hi Gonos003, Thanks for your question. Technically it is possible to use this tech spray on a synthetic lightweight fabric such as the Falketind primaloft. On the other hand I do agree with “justigoo” that it might limit the loft of the primaloft. I would therefor suggest to use it in case only on critical spots such as hood and shoulders, avoiding the whole surface. Best regards, Jens, Norrøna Fan Support