The Rambo Optimo 200g Horseware black liner is compatible with the Optimo rug. Combining unique Optimo Split technology for easy movement and 200g technical heat-bonded synthetic padding for maximum heat retention, this underlay has anti-static properties and fastens with Velcro loops at the neckline. and clips at the back corners to prevent it from slipping. The great thing about this liner is that it can be easily machine washed to keep it clean all season long! Compatible with all Optimo Horseware rugs bearing the lining symbol.