STABILO Trio Scribbi Deskset 12 Assorted Colours - Triangular Felt-Tip Pen Almost indestructible children's felt tip, thanks to its spring loaded thick tip The triangular design helps children to get a secure, ergonomic grip Washable ink which is easy to move from both hands and clothing Line width of nib is 1.5 mm to 2 mm Available in packs of 8 and 12 pens