Waterproof Pants or Over - Trousers are lightweight, windproof, waterproof, breathable and packable. The fabrics used allow perspiration to escape as water vapour which passes through microscopic holes whilst keeping out water. There is a Durable Water Repellent coating on the surface of the fabric to prevent the surface material from wetting out. This enables the fabric to breath. Taped seems ensure no water can penetrate along the lines of stitching.
Over trousers are generally carried in a small stuff sack about the size of a grapefruit and can be rapidly deployed as soon as it starts to rain. These pants are suitable for all outdoor activites in the rain: Notabley walking, hiking, climbing, running, cycling, & mountaineering but can of course be used for anything when you wish to stay dry.