EASY TO HOLD. Each measures 4.2" long by 0.9" inch in diameter. Great for school, cafe, office, home, daycare, summer camps and more. HOURS OF FUN. Ideal for children, teachers, teens, and adults. All ages can enjoy playing hopscotch, tic-tac-toe, four square, create artistic, fun drawings activit PERFECT GIFT. Fun birthday gift, Christmas present, Easter basket stuffer, or unique party favor for boys and girls. Safe and nontoxic. Washes away from side walk, blacktop, and driveway surfaces. MULTIPURPOSE. Can be used on multiple surfaces like asphalt, wood, concrete, brick, or stone. Low dust special formula creates a dustless drawing experience. Safe for use indoors as well. BRIGHT SHADES. Visible on dark or colored surfaces. Vibrant color for creating outdoor works of art. Create big, colorful murals or write large handwritten messages in vivid shades.