2 layer H2No shell fabrics are completely waterproof, windproof and breathable. They utilize an internal mesh or a wicking, hanging fabric liner to protect the waterproof barrier making them very comfortable and warm, even against the skin. 2-layer shell fabrics are versatile alternatives when you don't need the lightest or most durable shell available.
H2No - 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.