The Trango REAL Chunky Chalk is a pack of chalk for climbing. Included inside the eco-friendly packaging are 10 pucks of pharmaceutical-grade magnesium carbonate chalk. This premium formula is super low hydrate, zero additives, and ready to enhance your grip at the gym or the crag. The pucks allow you to break the chalk down to your preferred texture, whether that's hunks, chunks, or something finer.