These have a marble inside a mesh casing. The marble can be pushed up and down & fidgeted between fingers.
Buy 1 for $2.50 - advise your colour selection in the notes at checkout.
Buy 8 for $14.95 - comes with all 8 colours.
Colour will be selected at random unless specified in the notes.
Marble can be a choking hazard - Not suitable for children under three years old.