The STANLEY FatMax™ XTREME™ Chalk is made with a newly formulated, weather-resistant chalk, which adheres to wet and dry surfaces. It's also waterproof, so it will not fade or bleed in a wet environment.

This chalk snaps longer-lasting lines.

You don't have to worry about the chalk clumping; it will not clump in the reel, and clumping is reduced in wet conditions.

There are less chalk spills , and the square bottle will not roll off of work surfaces.

It washes off of clothes and hands easily.