- Versatile and Long-Lasting: The sponge remains soft and reusable even after the ink dries, ensuring extended product life and sustainability. - Cold Weather Performance: Designed to resist freezing, making it ideal for use in cold environments without the need for salt. - Durable Construction: The ink pens feature a robust design that guarantees excellent performance and a long lifespan, reducing the need for frequent replacements. - Easy to Use: This chalk pen ink marker is compatible with synthetic fiber ink threads, providing a smooth and convenient writing experience. Use Scenarios: - Perfect for artists and educators who require reliable markers for whiteboards, chalkboards, or other non-porous surfaces. - Ideal for outdoor events and signage in chilly conditions, ensuring that your message remains clear and visible. - Great for craft projects and DIY enthusiasts looking for a dependable marking tool that withstands various environmental challenges.