Non-slip - There are non-slip points on the back to prevent sliding on the gym floor or sidewalk when stepped on or run over during an event. So it is safe to use during fast-paced games and training Clearly visible- 9 inch of vibrant color designed to be clearly visible during games, sports and other activities. Poly spot markers for games in gym class or for agility dots training when practicing football, hockey, basketball, soccer, dance etc Useful - spot marker is Perfect for sports, classroom or activities - keep the kids in the Entertaining while improving their creativity and cognitive skills, the floor spots dots are a great alternative to traditional conical pens Ultra- - spot marker also has a tear- design that is easy to clean and can be reused. colour: random colors, don't accept the specified color Material: PVC + Size: diameter 23cm Package Contents: 12 x spot Marker Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.