This is world-renowned juggler Niels Duinker's Signature Juggling Ball Set, made according to Niels' specifications. These juggling balls are full-sized and juggle great! These 6-panel juggling balls are made of synthetic leather and are hand-stitched around to a millet fill. The ND juggling ball is soft but durable. It features the Niels Duinker logo, and these balls are among the best professional balls available. Specs: Weight: 160g 6 Panels of Synthetic Leather Millet Filled Made by Zeekio exclusively for Niels Duinker Set of 3 Juggling Balls