Here at Crux Particle, we are proud to present to you chalk of superior quality and drying power. Made of high purity Magnesium Carbonate (MgCO₃) along with our secret sauce. We strive to not only offer you a product, but a peace of mind and a calmness of heart, so you may no longer worry about wet hands and slippery grips, but to focus on what's important at that very moment, to make the move, to stick the hold, to send the route.