This unique liner is designed to help your horse dry quickly after training. The rug is designed with three different layers, which creates the best possible conditions for wicking away moisture from the horse. Layer 1: Polar fleece - Helps the horse obviously get rid of moisture from its coat. Layer 2: 50 g Fibre filling - When moisture is forced into the lining by body heat from the horse, the middle layer of fibre filling helps evaporate the moisture. Layer 3: The top layer comprises a 3D AirMesh for good ventilation. 3D AirMesh creates extra air space from heat and additional evaporation, preventing any outdoor rug you put on top from becoming moist on the inside and from making the horse feel cold. Can preferably be used in combination with all Horseware outdoor rugs which have an attachment liner.