Building on the crowd-favorite Mg²+ Seawater Chalk you’ve all grown to love, we’ve expanded the line to include Chalk Blocks and a Chalk Ball, giving you more ways to experience the same high-purity, high-performance chalk. At Flashed Climbing, we’re committed to equipping climbers with gear that performs at the highest level—while also advancing sustainability in our sport.
This isn’t just another chalk release. It’s a meaningful step forward in both performance and environmental responsibility.


What Is Mg²+ Seawater Chalk?
Mg²+ Seawater Chalk is made from magnesium carbonate extracted directly from seawater. This process offers a more sustainable alternative to traditional mining, significantly reducing the ecological footprint typically associated with chalk production.
The result is a clean, consistent, high-purity product that delivers excellent friction, whether you’re on plastic or stone. No additives, no fillers, and no compromise in performance.
We’ve tested it in the gym and on the rock, and the results are clear: Mg²+ provides dependable grip you can trust.
Now Available: Blocks and Ball
To meet the needs of different climbing styles and preferences, we’ve released Mg²+ Seawater Chalk in two formats:
- Mg²+ Chalk Blocks – Solid, versatile, and easily breakable into chunks or powder. Ideal for topping up buckets, bags, or making your own custom blend.
- Mg²+ Chalk Ball – A refillable ball filled with finely powdered Mg²+ chalk. It keeps mess to a minimum while delivering steady, efficient coverage.
Both options use the same high-purity seawater-derived magnesium carbonate, offering consistent texture and reliable drying power.


UPDATED Sustainable Packaging: 100% Recyclable, No Plastic
With this launch, we’re also rolling out our new and improved Chalk Tube Packaging. Designed with the same attention to detail that defines all Flashed products, this packaging is:
- 100% recyclable
- Made from post-consumer recycled materials
- Completely plastic-free
- Easier to open than our previous tubes—no more fighting with tough caps or fragile seals.
We know packaging might not be the most exciting part of your kit, but it matters. Better packaging means less waste in landfills and fewer microplastics polluting the environments we climb in.

Why Mg²+ Chalk?
The climbing community is at a turning point. As the sport grows, so does our collective responsibility to tread more lightly on the places we love. By choosing seawater-derived Mg²+ Chalk, you’re supporting a more sustainable supply chain—one that reduces land disturbance, avoids over-extraction, and uses a resource we have in abundance: seawater.
It’s a chalk you can count on—and feel good about using.
Final Thoughts
Whether you’re projecting a crux move, ticking classics at your local crag, or training for your next comp, your chalk should support both your goals and your values.
Mg²+ Seawater Chalk is high-performance chalk for serious climbers—and a smarter step forward for the future of climbing.
