The Pro Series was created to satisfy the design and quality requirements of world-renowned juggler Josh Horton. Hand sewn synthetic leather panels in a pentagon form with exactly the perfect amount of flexibility. The benefit of the panel design is that there are so many panels that the strain on the seam is distributed over a larger area, which helps to prevent rips, and the pentagon form helps the ball retain its round shape. These millet-filled balls feel firm and velvety in your palm. They get softer the more you use them. Josh's initials are engraved on one of the panels of each ball. This is a three-ball set. It weighs 128 grams (about 4.5 oz) The width is about 67 mm (2.7 ") It's about the size of a baseball. You'll like these balls, which will undoubtedly aid you in achieving your juggling objectives. This pricing is for a three-ball set. Weight is 128 grams (about 4.5 oz) Approximately 67 mm wide (2.7 ") Each ball has Josh's initials embossed on one of the panels.