Seeland Hawker Shell II TrousersSeeland Hawker Shell II Waterproof Trousers are technical, stretchable, and designed with an athletic fit to ensure ease of movement all season long. They feature a seetex membrane which makes them waterproof, windproof, and breathable. The hydrostatic head rating is 10,000 mm 10000 mm. In other words, no matter what the weather outside is like, you will always be comfortable and dry. With a mixture of 94% polyester and 6% spandex, these trousers are