Pack of 10 Lyra Groove quality pencils. One of the most comfortable pencils you will ever use, Lyra Groove Jumbo Coloured Pencils are 10mm, ergonomic triangular coloured pencils from the highly regarded Lyra range. The grooves encourage a natural grip with off-set slide guards for the thumb, middle and index fingers to support optimal grip even after sharpening. There is extra break resistance in the colour intensive lead (4.25mm). The pencils are suitable for both left and right handers. They include a name field. Excellent for helping children to develop their pencil grip. They are unlaquered and made from natural wood.