⬥Durable and weather-resistant: The Irwin Strait-Line Marking Chalk is built to withstand extreme outdoor conditions and months of jobsite wear. It can handle harsh weather elements, ensuring long-lasting performance in demanding environments.

⬥Flip-cap design: The convenient flip-cap feature keeps the chalk securely in the bottle, preventing spills and wastage. It allows you to control where the chalk goes, reducing mess and ensuring precise marking.

⬥Airtight chamber: The flip-top cap not only prevents spills but also seals the chalk in an airtight chamber. This effectively keeps out moisture, preserving the integrity of the chalk and reducing the risk of clumping.

⬥Permanent and vivid color: This marking chalk comes in an indigo blue color, providing clear and long-lasting markings. Its permanent formulation ensures that the marks remain visible, even in tough outdoor conditions.

⬥Permanent and vivid color: This marking chalk comes in an indigo blue color, providing clear and long-lasting markings. Its permanent formulation ensures that the marks remain visible, even in tough outdoor conditions.