The Stormflex II Trousers from Regatta Professional. Breathable, lightweight and waterproof – the men’s waterproof trousers are perfect for getting the job done. The men’s work trousers feature a waterproof and windproof fabric with a stylish PU finish. They’re ideal for work on the farm, stables or country estate in the wintertime. The men’s work trousers come with a comfortable and bulk-free, lightweight knit backing.