SNSsports inline-wheels use hard type Polyurethane(Shore A 85~87) on the core of the tire and the edges contacting the road surface for speed, and use soft type Polyurethane(Shore A 82~84) with higher friction with road surface on both sides of the tire to prevent slipping during push and cornering. By using different Polyurethane materials with different degree of hardness on the core and edges of the tire, and the lateral parts of the tire, it succeeds in providing inlineskate wheels with high safety and speed.
