Butterfly introduces its latest technology the Microlayer. This is a refinement of it's patented technology. Microlayer technology provides increased speed and spin due to its thin surface design. The thinner rubber surface grips more of the ball than ever before offering more speed and spin than Bryce Speed. Bryce High Speed is known to be Butterfly's fastest rubber. We wholehardedly recomend experienced players explore the improved results the rubber delivers. You will experience speed like no other in the Butterfly line.