The ORB Slimiballz are similar to the Beadiballz, but do not contain water beads, they are filled with a more consistent, rubbery substance. They definitely do not feel slimy, but rather rubbery and soft.
The Ultra Slimiballz is about the size of a grapefruit and relatively heavy, but still manageable for the kids.
Specifications:
- The official dimensions are 10.16 cm x 27.94 cm x 22.86 cm but it looks like that is the dimensions of the package, not the ball
- Its weighs 450 g so it does have some weight.