4 In 1 Sank Magic Practice Copy Books

4in1 Sank Magic Practice Copy Books For Pre-schoolers Containing satndard quality, thick and durable pages made to last. Includes a magic refill pen that uses invisible ink, writing will disappear automatically after 15 minutes of writing and can be reused again Designed with deeper grooves that help students learn to form letters and numbers correctly every time they practice writing them This is a Magic Copybook that can help children improve their handwriting by demonstrating correct posture. It has a silicone pen holder, which facilitates children to master the method of holding pen. The Magic Copybook can help children practice their handwriting and have fun at the same time