Essential for a good waterproof protection during your session. Breathable, waterproof 2.5-layer DryVentâ„¢ fabric with sealed seams to stay dry. Adjustable fixed hood. DRYVENTâ„¢Seam-sealed, double- or triple-layer DryVentâ„¢ fabrics are designed to provide waterproof, windproof and breathable properties.