2.5-layer H2No shell fabrics are waterproof, windproof, breathable and highly packable. They combine a water-repellent shell fabric with our H2No waterproof barrier and a raised pattern on the inside, instead of the full-coverage interior scrim used in 3-layer fabrics. The raised pattern makes 2.5-layer fabric packages lighter and more compressible while still protecting the waterproof barrier.
The H2No Barrier is Patagonia's standard for 100% waterproof and breathable protection in our shell garments. The H2No fabric package is created by adding a waterproof and breathable laminate or coating to a high performance protective fabric. This fabric package blocks wind and water on the outside while allowing water vapor generated by your body to escape – keeping you warm, dry and comfortable.