Psychi Climbing Chalk Block 56g - Sustainable Sea-Derived Chalk

The Psychi Climbing Chalk Block is a 56g block of high-purity magnesium carbonate made sustainably from seawater. Produced from recycled seawater by-products, it gives you reliable, high-friction grip with a lighter footprint.

The particle size is optimised for climbers, so it absorbs moisture efficiently and improves friction on rock and plastic alike. There are no additives or bulking agents – just clean, consistent chalk. Choose the block if you like to crumble your own chalk into your bag or bucket to the texture you prefer.

Why you'll love it

• Superior grip – high-purity chalk for maximum friction
• Sustainably made – produced from recycled seawater by-products
• No additives – no fillers, bulking agents or impurities
• Optimised particle size – better coverage and moisture absorption
• Versatile – works for climbing, lifting and gymnastics

Good to know

• Size: 56g block
• Material: sea-derived magnesium carbonate
• Fine, consistent texture – easy to crumble into chalk bags or buckets

Who it's for

Climbers of all levels – indoor and outdoor, bouldering and sport – plus weightlifters, gymnasts and anyone in a grip sport who wants clean chalk that's kinder to the planet. A handy stocking filler too.