Using the same technology as the official sized GST balls the K2 GST combines the classic K2 pattern with Game Saving Technology. The GST is the only football to offer patented sewn in stripes and ACL composite leather laces. Combined with exclusive Wilson GST leather, the GST offers one of a kind game saving technology. Wilson is the #1 name in football and offers the best selling game footballs in the country and are approved in all youth leagues.