R’Tech Nano - Swiss Cheese Membrane Technology
What does Swiss cheese have to do with a high-tech outdoor brand? The answer lies in the holes. The new R’Tech Nano membrane has an ultra-fine microporous structure. Its pores allow water vapour to escape while reliably keeping rain out.
The comparison in size shows how it works: If a membrane pore were as large as a hole in cheese, a water droplet would be the size of a stadium. Water vapour, on the other hand, would be as fine as a hair.
Current tests demonstrate its high performance: The R1 Alpine Tech Jacket achieves 16% higher waterproofing and 48% higher breathability than the industry leader.
The PU-based technology is hydrophobic, microporous and completely PFAS/PFC-free. For you, this means reliable protection against moisture, efficient wicking of sweat and a pleasantly dry feeling, even during intense activity. The membrane is also particularly elastic, guaranteeing maximum freedom of movement.
Innovation made in Switzerland.
At Radys, we combine Swiss precision with sustainable textile innovation. Our functional clothing is developed in the Swiss Alps – inspired by real mountain sports experiences and crafted with the highest quality standards.



