Material: Polyurethane (PU), a synthetic type of leather. Soft body with a glossy PU padding.
Size: 6.2cm (diameter)

Used during an EMS training session. Squeezing our training balls during an EMS session will tense the muscles of the wrist and forearms giving you better control and allowing you to train harder. Furthermore using training balls will assist those training with long nails not to break any.