The Helios is made of a new, patented material! This material is made from a combination of polystyrene and a special kind of rubber. This results in a ring that is extremely lightweight, but also very strong. The material is hard enough not to dent or break if the dart hits the edge, but soft enough to maintain its function as a surround ring. Other systems may need an extra surround ring, but this system is 2 in 1.
The Helios is 12 cm thick and has the normal 69 cm diameter of a surround ring.
Thanks to 60LED lamps per meter you will have no problems with umbral shadow on the dartboard from the darts.
And the warm white light minimises strain on your eyes, allowing you to fully concentrate on the darts game.