Iron-Gloves Gravity Gripp Ball Blue Onesize GOLF GRIPP HAND TRAINER is golf's leading training device. Helps create strength in your grip for a better feel of the club. Helps with longer drives and putting control. Used by PGA, LPGA, and golf schools around the country. Safe and non toxic. Washable with soap and water. Ideal product to develop strength while watching TV. 100% Satisfaction Guaranteed. Available in a variety of colors and 3 sizes and weights.