Dryf21

Found in rainwear and technical shells for hiking or mountaineering in unpredictable weather.

likely refers to Quiksilver's DryFlight 21 (or DRYF21) technology, a high-performance fabric used in outdoor and winter sports gear. It is designed to keep athletes dry and comfortable by balancing waterproof protection with high breathability. Key Features of DryFlight 21 DRYF21

Engineered for rugged use in harsh mountain environments, maintaining its protective qualities over time. Found in rainwear and technical shells for hiking

Provides a high level of protection (often rated at 20,000mm/20k) to block heavy rain and wet snow. DRYF21