Indigo Blue Permanent Chalk Refill (4 lb Bottle) REVIEW Please note that cartridges and

Please note that cartridges and filters are sold separately

Just soak the band in water for 2-3 minutes and then wear it for up to 5 hours of cooling relief

be sure to: Holding the D-Ring

Safest System On The Market

Indigo Blue Permanent Chalk Refill (4 lb Bottle) REVIEW Please note that cartridges andIntroducing the Irwin STRAIT LINE Marking Chalk Refill, your go to solution for precise and durable markings. This refill features Indigo Blue permanent chalk, perfect for a variety of marking applications. With a generous 4 lb bottle, you have an ample supply for your projects. What sets Irwin STRAIT LINE apart is the innovative flip top cap design, engineered to keep chalk precisely where you need it while preventing spills and mess. The flip top