@jmyversion: Complete Set: Includes all necessary tools such as pens, refills, and a pen case for immediate practice Educational Variety: Covers various subjects including English letter, math, and drawing for holistic learning Ergonomic Design: Features three-dimensional grooves template to aid proper handwriting Ideal Size: Optimally sized at 10.2x7.2 inches for easy handling by children Magic Ink: Ink that vanishes automatically ensuring endless practice opportunities Reusable Cards: 30-minute fade-out ink allows for repeated usage with each practice