Rail is a sofa with a wooden frame and removable cushion covers available in various types of fabric, offered with and without armrests.‎Rail is suitable for both indoor and outdoor use.‎ The outdoor cushions are hand-filled with high-resilience polyurethane foam and fiber encased in a removable water-repellent polyester fabric cover with waterproof zippers and thread.‎ The indoor cushions are filled with high-resilience polyurethane foam with a removable "jacket" cover made of down and feathers.‎