"This pack of 12 non-toxic and dust-free Grafitti Chalks encourages free-form creativity. This eco-friendly chalk set of 12 soothing colors comes in a portable plastic box and works well on porous and non-porous surfaces. It helps in improving hand grip and comes with twist-up action. Pack Includes - Cobalt blue, pearl white, beige, sea green, lavender-pink, pastel pink, pastel orange, pastel yellow, bluish-green, pastel peach, neon orange, and pastel green. Premium Quality - Made up of natural plant oil, these are water-soluble and skin-friendly. It is non-toxic, odorless, and completely safe for kids. Adjustable Length - Revolve & Twist! Adjust the length as required. Skills - It refines colour recognition. Improves hand-eye coordination and finger grip. Stimulates creativity and imagination. Easy to Clean - Clean it with a wet wipe or cloth. Multi-Surface Compatible - Write easily on paper, blackboard, whiteboard, wood, glass, ceramic, or any other porous & non-porous surface. "