For the best grip on the rock and on the wall the Chalk ball Bergfreunde.co.uk edition. The chalk ball weighs 56 grams and keeps the chalk where it belongs. Particulate pollution is substantially reduced by the use of chalk balls, particularly in climbing gyms. In some gyms, the use of loose chalk is forbidden, so here a chalk ball is really great. The magnesium reliably dries hands. For the best grip at difficult key points you can rely on the Bergfreunde chalk ball.