The shopkeeper’s tips: how to distinguish the quality of the product, one is “look”, the raw material of a good jelly grip ball is a good silica gel, and the light observation, the sphere Clear and transparent like jelly, with uniform texture. The products made of poor silica gel are not transparent under the light, and the texture is turbid; the second is “feel”, the good jelly grip ball feels dry in the palm of the hand and does not stick to the hand. The poor product has a sticky feel when held in the palm of the hand.
Shape: There are two kinds of round shape and egg shape;
Color: blue, yellow, green,Rose red, transparent white
Material: Flexible silicone, non-sticky
Instructions:
hand exercises
Finger kneading exercise
Finger massage
One ball is small, you can pinch two balls together