As the name "Sura Sura Kakeru Crayon" (Smooth-Writing Crayon) suggests, even young children with a light touch can easily draw with these crayons, unlike colored pencils, which require more pressure! These crayons were stored after being used 2-3 times. The longest extension is about 4-5 cm (as shown in image 8). The remaining lengths are fairly consistent. Before listing, I cleaned the case and the crayons themselves. There is some crayon residue that couldn't be removed, such as on the inside of the caps. Perfect for your child's drawing debut!