Specially blended shock resistant core material. Impact-resistant nylon gliders increase stability and reduce friction for fastest play. Helps develop confidence and improve the three key skills in handling sticks: one-touch passing, toe drags and saucer passesThis roller hockey puck is suitable for daily training and competition of roller hockey. It is a good choice for roller hockey players, teams, clubs, clubs and arenas. Ideal for smooth indoor and outdoor surfaces such as sports grounds, ice courts, smooth concrete, wood. Lightweight high density composite material for speeds. Smooth glide for ultimate speed and consistency on a smooth surface. Practice your movements at home / anywhere. - Glides effortlessly on virtually any rough surface, allowing you to play on driveways, car parks, streets, basements, tennis courts, etc. Stay flat. - Do not tip over or tip over.