Denier is a measurement that indicates the weight of a thread per 9000 m. Thus, 1 denier means that the thread weighs 1 g / 9000 m. This indicates that the fine thread is not too tear-resistant. Since horse blankets are worn around the clock, they must be robust. A high denier value is therefore obligatory, because in principle, the higher the denier value, the more durable the blanket. In addition, you should make sure that the blanket is made of nylon, as this material is almost indestructible in combination with a very high denier value.