An occasional squeeze of the mat grip eco ball will absorb sweat, keeping your hands dry enough to stay static on your mat. Filled with a non-toxic compound, which contains no magnesium carbonate, alcohol or thickener, these eco friendly squeezable balls are a cleaner and environmentally friendly substitute to liquid chalk. An integral piece of yoga kit if you feel slippery hands are inhibiting your practice. Thanks to our rock climbing friends for sharing this anti-slip secret.