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The double line outline pens designed with unique technology will automatically produces outlines for you to create a beautiful dual-color effect. And it can draw 3 different effects on light colored paper, black paper and smooth surface.
The double line outline pens designed with unique technology will automatically produces outlines for you to create a beautiful dual-color effect. And it can draw 3 different effects on light colored paper, black paper and smooth surface.
(We suggest children under 3 years old should be used under the supervision of an adult). ❤Easy to Use: These self outline markers is very easy to use. Firstly, shake the supersquiggles pen up and down with cap closed to well mix the ink.