Who didn't love a slinky in the 80's? Scientific marvel of gravity and physics!  A lovely metal weighted one or two handed sensory tool to fidget with.  The gentle tinkling sound is quite soothing also.  

We have had these made with a cap on each end of the coil for smoothness and safety.  

We prefer these silver versions, as the colour on most colour varieties wears off & can even come off on the hand. 

Approx 6 cm in diameter, 5 cm high & 8 cm in circumference.