PLS Horizon Orbit design Opalware.With refreshing designs and patterns, our new Opalware dining sets come complete with 4 x Dinne. Plates, 4 x Side Plates, 4 x Bowls and 4 X Mugs. Opalware is made from tempered glass and is hard wearing, dishwasher and microwave safe, chip and break resistant and lightweight, meaning you will not have to sacrifice luxury in the interest of weight on board your leisure vehicle.