The new SIL-X Hybrid from Play is made from the same
shell as the SIL-X silicone filled ball, however, the Hybrid is half
filled with millet. This means the Hybrid has a more of a Russian ball
effect. The Hybrids are perfect for mixing contact, toss juggling and
some footwork. They roll very truly and stall solidly. Although they
have some "Russian" ball properties they are still well behaved during
long-path body rolls. A perfect ball for toss juggling.