Toy Tools features: It's very important to cultivate children's interest in roller hockey in their early age, it can not only improve their physique, but also their flexibility, upper body strength, and ball sense. Children who play roller hockey have stronger sense of competition, and they are more willing to face and solve problems when they're suffering setbacks. Features Material: PP Size: About7.50X7.50X3.00cm/2.95X2.95X1.18inch This item is professionalroller hockey puck, made with PP material, durable and sturdy It can not only improve children's physique, but also their flexibility, upper body strength, and ball sense Children who play roller hockey have stronger sense of competition, and they are more willing to face and solve problemswhen they're suffering setbacks A good quality ice hockey puck can not only improve your skills but also let you find the interest in sports High hardness, dense and clear texture, good resilience, enhancing the adhesion between the roller hockey stick and the puck.