CruxTech Heavy Duty Chalk Blocks (100% Magnesium Carbonate)

CruxTech Heavy Duty Chalk Blocks (100% Magnesium Carbonate)

£9.99
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CruxTech Heavy Duty Chalk Blocks (100% Magnesium Carbonate)

CruxTech Heavy Duty Chalk Blocks (100% Magnesium Carbonate)

£9.99

Unleash Raw Performance with CruxTech Heavy Duty Chalk Blocks!

Built for climbers who demand pure, no-nonsense performance, Crux Technology's Heavy Duty Chalk Blocks deliver solid, chunky magnesium carbonate in its most rugged form. No fillers, no gimmicks just 100% pure, natural chalk, crafted for those who prefer a classic, hands on approach. Our unique heat-pressing technique ensures a drier, long-lasting block that absorbs moisture efficiently, providing superior grip in any condition. Designed for old-school rock climbers, traditional mountaineers, and serious athletes, this chalk offers unwavering reliability with every ascent.

Lab-tested for purity and peak performance, this is the original CruxTech texture that climbers have trusted for years. Its superior moisture absorption and dependable grip make it a favourite among both old-school purists and modern competition climbers. Whether you're crushing a big wall or pushing limits in the gym, Crux Technology's Heavy Duty Chalk Blocks give you the confidence to climb higher.

02Why climbers choose Madu

Every product, a considered choice.

  • 01

    100% pure

    Magnesium carbonate.

    No fillers, no bulking agents. Just clean, dry, high-friction chalk.

  • 02

    Climber-tested

    Real climbing, real testing.

    Every batch proven on rock and plastic before it ships.

  • 03

    Built to last

    High quality & durable.

    Designed to last seasons, not sessions.

  • 04

    Considered

    Materials that matter.

    Cotton, merino wool, real wood — all materials provided by Mother Earth. No shortcuts.

  • UK & EU shipping

    Dispatched within 2 working days.

  • 30-day returns

    Unused products, hassle-free.

  • Tested by climbers

    Proven on rock and plastic.

  • Established since 2021

    Designed by climbers who live and breathe the sport.

Built by climbers, tested in the real world.

02The story

Built by climbers, tested in the real world.

Over a decade of climbing has taught us what actually matters. Every Madu Climb product has been developed and refined through real climbing — with feedback from customers and the wider climbing community shaping every version.

Five years of climbing has taught us what actually matters at the crag: gear that works, that lasts, and that gets out of the way.

Read our story
Real gear. <strong>Real climbers.</strong>

03Built for climbers

Real gear. Real climbers.

Every product is developed, tested and refined through real climbing.