DURABLE MATERIAL: Adopting environmentally friendly PVC material, safe, odorless, durable for long term use - you can have some peace of mind. PRINTED NUMBERS: These spot markers are numbered 1-10 for activities involving numbers, to identify different stations. COLORFUL MAKERS: These colorful pvc spot markers helping you set out the rules of the activity and making the game run smoothly, without confusions. WIDE USE: Suitable for all soccer lovers as well as basketball, baseball and any other ball athlete and counting activities, math games, organization, attendance, obstacle courses, and so on. Simple and practical to use.