Horse blankets are available in many amazing colors and sizes. They look great, but they also serve a practical purpose. Thick pasture blankets keep the horses warm on cold winter days and are highly durable. Rain blankets are usually extremely lightweight and protect the coat against moisture. There are even riding blankets. They keep out the wind on exposed fields, where the wind can often be very nippy. Special reflective stripes on horse blankets are ideal for late-evening rides. They mean the horse and rider are clearly visible even in the dark.