Rock Technologies MAG Green Chalk is seawater sourced, 100% pharmaceutical grade magnesium carbonate fine grind chalk, designed to facilitate your best performance. 

The chalk is non-mined with 100% recyclable, plastic-free packaging to help lessen the impact on the earth.

Specification

• Drying Agent: No
  
• Fine Grind
• Chalk volume: 600g (2 x 300g bags)
  
• Made in the UK