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Rock Technologies Mag Zero Chalk Tube

Rock Technologies Mag Zero is quite possibly the driest and therefore most absorbent climbing chalk on the market, making it work harder and longer for you with fewer chalk-ups required. 

The boffins from the Rock Technologies lab have managed to reduce the hydrates found in their pharmaceutical-grade Magnesium Carbonate making it super dry and capable of absorbing much more sweat from your hands. This means the chalk works harder than standard chalk and will stay on your hands for longer so that you can climb harder for longer!

100% pharmaceutical-grade magnesium carbonate, RT's own formula mixed and packed in the UK, gives superior drying and friction qualities and doesn’t contain any artificial drying additives. The packaging is made from 100% recyclable materials sourced from sustainably managed forests.


  • Drying Agent: No
  • Resealable tub
  • Chalk volume: 150g (10 pucks)
  • Made in the UK 
  • 100% recyclable

Personal Shopping - By Appointment

Would you like to try on some climbing shoes or mountain boots for size before you make your purchase? If so, then why not book an appointment with us today! We can offer you a bespoke one-on-one shopping experience with one of our experienced staff members.