Rain coats, jackets and ponchos keep workers dry and comfortable in rainy or wet conditions. They may be lined to provide cold weather insulation. Rain coats and jackets come in full-length and waist-length forms. They have storm flaps to keep out water and may have inside and outside pockets. Rain coats and jackets are made of polyester, while ponchos are made of vinyl. They are often available in high visibility colors such as yellow or orange. Rain coats and jackets may have reflective stripes to keep workers safe in low-light conditions.