They are everything the moon ball is but giant. At 6” (15cm) across you can stand on them for balance and foot conditioning, roll on them, and squeeze them.
For anyone done dealing with soft palms, sweaty grip, and thin skin. These balls use sharp, irregular pores to deliver high pressure squeezing without scraping skin off. It’s the same principle behind traditional callus building minus the excess damage that sets you back days at a time. The result is faster skin buildup, tougher hands, and dramatically better friction.
