Rain sock's for Mini 22 intakes will prevent water from getting to your filter and into the engine. Each pre-filter has been engineered to add an extra layer of protection from water and other debris without restricting airflow Tapered Design Specially Designed The Shape of the Mini 22 Air Filter 100% Monofilament Polyester w/ Water Repellent Finish Hydrophobic Technology Repels Water in All Weather Conditions