⚡ Same-day shipping on all orders |★★★★★ 4.9 stars — 2,400+ reviews |🇨🇦 Developed & manufactured in Canada |🌿 100% natural — no petroleum, no fillers | 🚀 Free US shipping on orders over $50.00 |⚡ Same-day shipping on all orders |★★★★★ 4.9 stars — 2,400+ reviews |🇨🇦 Developed & manufactured in Canada |🌿 100% natural — no petroleum, no fillers | 🚀 Free US shipping on orders over $50.00 |

Journal

THE JOURNAL

Training tips, skin science, and athlete stories.

Feb 27, 2015callus

How long will my GRINDSTONE last?

We often hear from customers that their stone flakes, and leaves a black dust on their hand. This is true! And a very important feature...

Read More →

How to take care of your gnarly, callused CrossFit and rock climbing hands

Feb 24, 2015callus

How to take care of your gnarly, callused CrossFit and rock climbing hands

Read More →

Feb 20, 2015callus

Prep Your Hands for the Open!

Read More →