Abstract: A massage roller includes a cylindrical tube body having an inner surface; a supporting core attached on the inner surface of the cylindrical tube body to form a cylindrical cavity; and a filing unit disposed inside the cylindrical cavity to improve the strength of the massage roller.

Abstract: A game ball with non-slip layer includes a plurality of f stretchable panels, and marginal edges of the panels connected and sealed together to form a ball surface, and the ball surface having in inflating hole to inflate air into an inflatable bag formed inside the panels; and a non-slip mesh layer covered around an outer surface of the ball surface to provide improved handing and playable characteristics.