We are excited to launch our own brand of Chalk Crayons, which are most compatible with our Reusable Signs! These crayons are designed for adults and kids alike to write and doodle! They are non-toxic, water-based, dust-free, wet-erasable and safe for little ones to use! Can be used on most non-porous surfaces like windows, glass, mirrors, plastic, metal, rubber, etc! Use to mark your wine glasses, decorate windows, label tupperware....get creative! Colours consist of Pink/Red, Orange, Yellow, Green, Blue, Purple. Instructions: 1. Remove cap and write/draw! 2. Twist the end of pen to extend or retract chalk 3. Simply use a wet/baby wipe to wipe clean. Make sure surface is dry before next use. Made in Korea. Suggested age: 3 and up with supervision. Our crayons have been tested and in compliance with EN71 1-2-3 and ASTM D4236 standards.