Tulips will change color when meet sunlight. Funny, funky and adorable tulip shaped gel ink pens, creative and interesting props to take with, you will get a lot of compliments on them. These unique pens can also help to inspire your interests and enrich thinking creativity. It is suitable for everyday use in the office, home or school, as well as taking notes or writing up assignments. Can work as a gift for any tulip lovers, kids, friends and families, a practical stationery for your study. Made from silica gel material, measuring 8.50 INCH, this custom color changing flower ballpoint pen. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization available: Print your logo or customize packaging and color schemes. Product Highlights: Sleek design, durable build, easy to grip.