for smooth indoor and outdoor surfaces, such as sport court, ice court, smooth concrete, wood. This roller hockey puck is suitable for daily training and competition of roller hockey. Specially blended shockproof core material. High impact nylon glides increase stability and reduce friction for fastest play. Lightweight high density composite for speeds. Low- friction glide for ultimate speeds and consistency on a smooth surface. a great choice for roller hockey, teams, clubs, association and arenas! - Color: Red. - Material: Nylon, PVC. - Size: 7. 50X7. 50X2. 50cm/ 2. 95X2. 95X0. 98inch. - This roller hockey puck is suitable for daily training and competition of roller hockey. - a great choice for roller hockey, teams, clubs, association and arenas! - Specially blended shockproof core material. High impact nylon glides increase stability and reduce friction for fastest play. - Lightweight high density composite for speeds. Low- friction glide for ultimate speeds and consistency on a smooth surface. - for smooth indoor and outdoor surfaces, such as sport