[Safe Round Spot Markers] Made of high quality pvc material, very thick, sturdy and safe for kids using. The edge of spot marker is round, but not sharp. And don't damage the carpet when moved. It is very smooth and comfortable when you sit down. The tear-resistant and slip-resistant design ensures that withstand many games and exercises on the playground or in the classroom.[Anti Slip] Spot marker is anti-slip and non-skid to prevent falling down and stepped on or run over during activities when sliding across gym floors, school playground, and play areas.[Bright Conspicuous Colors] With 12 round 9 inch markers in 6 different bright colors green/purple/blue/yellow/orange/red, each color have 2pcs marker. The spot marker set is exactly designed for optimal visibility. They are very easy to recognize during games, exercises during training or sport activities.[Entertainment & Enjoyment] These soccer markers perfectly fit for sports, school training playground,classroom, and other party activities. These sport marker could keep kids entertained for hours, and improve their creativity and cognitive abilites at the same time. Rubber dots is a great replacement for trational cone markers. Perfectly fit for many different occasions, such as football, soccer,basketball, fitness, sports traning, and other sports.[Indoor or Outdoor Activities] Spot marker set is designed for players who run over it, and sure to hold up to indoor or outdoor use in a variety of conditions. Students could sit or stand in sequence according to these spot markers, bright and conspicuous colors are useful reminder to kids and athlete on the playgroup making easy to see during games and drills when training or practicing sports. The carpet marker is reusable, because vinyl material of the markers is washable, and easy to clean.