Asana Death Grip Climbing Chalk comes in two formats, loose powder and Doom Stones, so climbers can match application style to the session rather than compromising. On a long outdoor route, Doom Stones controls output move to move, while the Bone Dust loose chalk delivers fast full-coverage application at the gym. What Our Gearhead® Experts Are Saying:"I keep the loose chalk for gym sessions where I want fast coverage between burns, and the chalk ball when I'm outside and don't want to dust the whole crag. Both are pure magnesium carbonate, so the grip is the same either way."