xGnP® graphene nanoplatelets from XG Sciences provide multi-functional benefits of enhanced mechanical, wear, barrier, thermal, electrical properties when dispersed in elastomer, thermoplastic, thermoset resins. Callaway has integrated xGnP® - polybutadiene composite material into golf ball cores to expand their design envelope and produce performance characteristics appreciated by the best golfers in the world.

Dave Bartels is currently Sr. Director of Golf Ball Research and Development at Callaway Golf in Carlsbad, CA. He received his BS in Mechanical Engineering at the University of California, San Diego and an Advanced Certificate for Executives in Management, Innovation, and Technology from the Massachusetts Institute of Technology. His work history includes brief tenures at Hewlett-Packard and D&K Engineering (both in San Diego) in a variety of engineering roles. He began his career at Callaway in 1998 as a testing engineer on the Golf Ball R&D team and has been involved in every Callaway golf ball launch since.

Callaway Golf Company is an American global sporting goods company that designs, manufactures, markets and sells golf equipment, golf accessories and golf lifestyle-related products in more than 70 countries worldwide. The American company, based in Carlsbad, California, is the world's largest manufacturer of golf clubs.