Stress Ball Can imprint the logo on the lycra cloth, suitable for the promotional gift *diameter: 5-10cmFeatures: 1) gel stress ball with fabric Can imprint the logo on the lycra cloth, suitable for the promotional gift 2) To be designed to increase hand strength and flexibility 3) Stress release,Squeezable, hi-bouce 5) inside ball's material is TPR or PU, outer side is lycal cloth