Material: Paper Size: One Size Color: As shown 1. Unique Father-Son Interactive Design: Designed for heartwarming communication between fathers and children, each page is filled with fun Q&A and helpful tips to enhance parent-child 2. High-Quality Writing Experience: Made with thickened, high-quality paper, ensuring smooth writing without ink bleed-through. Compatible with fountain pens, ballpoint pens, and pencils, meeting various writing needs. 3. Creative Knowledge-Inspiring Content: Includes fun trivia and interactive challenges to stimulate children's curiosity and desire to explore, allowing learning to occur naturally through conversation. 4. Portable Retro Design: Compact size for easy carrying. The cover is environmentally friendly material, combining style and practicality, suitable for everyday note-taking. 5. Ideal Gift Choice: With the theme 'Hey, Dad! Tell Me Something I Dont Know,' this meaningful gift is a heartwarming choice for Father's Day, birthdays, or a growth gift. Package Includes:1pcs notebook