??Smooth 3D drawing experience the best 3D drawing experience by only using 3Doodler Start plastics with 3Doodler Start 3D printing pen. ??Safe to use?designed complete safe for ages 6+ to use. The 3Doodler Start plastics have been subjected to the strictest standards of safety testing. ??More value for money?the Start 6-Pack bundle includes 144 strands. 10: 1 ratio, every strand of plastic creates 60 inches of doodles. You get hours of doodling fun! ???? ?Includes vibrant colors?this pack includes: ocean blue, spring green, lemon zest, cherry red, Tangerine Tang & simply white ?????The 3Doodler app?get an interactive experience! The app is packed with dedicated easy to follow stencil section and step by step interactive instructions, receive badges for completed projects and photograph & share your creations directly on social media. The app is fully built on iOS & Android.