IMPROVED GRIP: High-quality magnesium carbonate formula dries hands effectively to improve friction and grip on rock and artificial climbing holds. CHUNKY TEXTURE: A blend of fine powder and large chunks reduces airborne dust in the gym while allowing you to crush the chunks for your preferred consistency. RESEALABLE BAG: The robust packaging features a secure zipper seal to keep chalk contained during transport and prevent messy spills in your backpack. EASY FILLING: The bag is designed to stand upright, making it easy to scoop chalk into your bag or bucket without tipping over. QUANTITY OPTIONS: Available in 200 g, 300 g, and 500 g bags to suit your climbing volume and storage needs. Petzl POWER CRUNCH is a premium chunky chalk designed to improve grip on rock or gym holds. This loose chalk features a mix of powder and chunks to reduce airborne dust while providing excellent coverage and texture. Ideally suited for filling chalk bags and bouldering buckets, it ensures your hands stay dry and grippy in the crux. The chalk is packaged in a durable, resealable bag that stands upright for easy use and prevents spills inside your pack. Available in three sizes: 200 g: Perfect for refilling a standard chalk bag twice. 300 g: A larger supply for frequent climbers. 500 g: The bulk option, ideal for filling large bouldering buckets (like the SAKAB).