Thin Air Climbing Chalk 300g

Thin Air Climbing Chalk - Made Out of Thin Air

Thin Air is climbing chalk with a story behind it. Made in Scotland by a startup on a mission to reduce the impact of minerals globally, it is created using a process unlike any other climbing chalk.

We fuse CO₂ with magnesium compounds to make high-purity magnesium carbonate from minerals and carbon dioxide. The result is a premium chalk that permanently locks away CO₂ while delivering the same feel, dryness, and grip climbers expect from high-performance climbing chalk.

At 99% magnesium carbonate purity, Thin Air has been designed to perform exactly like premium climbing chalk — clean, consistent, and reliable from warm-ups to crux moves. The difference is how it is made.

No other climbing chalk is made using our process. By turning CO₂ into a useful mineral product, Thin Air helps show what the future of lower-impact minerals can look like.

Why climbers choose Thin Air

• Made from CO₂ — created by fusing carbon dioxide with magnesium compounds
• Permanently locks away CO₂ — carbon is turned into stable magnesium carbonate
• Made in Scotland — developed by a purpose-led minerals startup
• Unique process — no other climbing chalk is made this way
• Premium performance — designed to feel and perform like leading climbing chalks
• Very high purity — 99% magnesium carbonate for dry, dependable grip

Climb with premium chalk made from CO₂.
Grip hard. Leave less behind.

We are now inviting our first customers to pre-order our product.  We are currently building our production and just building up production using plant based CO2.  Please expect your order to arrive within 3 weeks.     

Key Features

• 99% magnesium carbonate (MgCO₃)
• Excellent moisture absorption
• Consistent texture for dependable grip
• Ideal for bouldering, sport climbing, and training
• Produced using plant-derived CO₂ — a first for climbing chalk