Lyra Super Ferby 4-colour Rainbow, Box of 12 Pencils

Instead of a single shade, each pencil has a special core that carries four colours at once. As you draw, red, blue, green and yellow come out together in one stroke, giving a striped rainbow line. It is the same chunky, triangular Super Ferby body, just fitted with a multicolour lead for playful effects.

The lead is made up of the four colours set side by side in a single core. When the angled tip touches the paper, each colour leaves its own band, so a single line shows all of them together. Twisting the pencil or changing the angle shifts how the stripes fall on the page.

Yes, they use the standard Super Ferby shape, which is thick and three sided. The flat faces settle into a tripod grip and the wide barrel is simple for small hands to control. That means younger children can enjoy the rainbow effect while still practising a comfortable, steady hold.

Hold the pencil at a slight angle and use broad, sweeping strokes so all four colours print at once. A slightly rounded tip spreads the stripes wider, while turning the pencil as you go mixes how they overlap. Colouring large open shapes shows the effect better than fine, detailed lines.

Every pencil carries red, blue, green and yellow in the one core. Those four cover a lively spread, and because they print together you get instant multicoloured lines without swapping pencils. It is a fun contrast to a plain single colour set, and works well for quick, bright drawings.

Twelve identical rainbow pencils mean a group can share the same effect at once, which suits classrooms, party tables or siblings drawing side by side. Having spares also helps, since a well used favourite can be sharpened while another is in hand. Each pencil behaves the same, so there is no set-up.

Treat it like any thick Super Ferby: use a jumbo, wide hole sharpener and turn the pencil slowly. Keep the point fairly blunt rather than needle sharp, since a broader tip shows all four colours better. Gentle sharpening also protects the combined core so the colours stay even as you draw.