Dixon Lyra Groove Slim Colored Pencils - Pack of 12 (92821120) Slim colored pencils feature grooves that make a proper grip seem logical to young students Innovative three sided ergonomic shape offers a natural grip zone made from all natural materials Design also features an extra breakproof 3.3mm core that is color intensive and waterproof Pencils are easy to sharpen in a regular sharpener and are ideal for children of all ages Pack of 12 pencils