Pop tubes are a simple but super fun fidget toy, they expand when you stretch them, making a satisfying 'clicking' sound & they can also be connected to one another. These are just like the original but with an added sensory element of flashing LED lights. The batteries are included, & are non-replaceable, but once the lights go out, you're still left with a connectable, stretchable, fidget toy that kids can continue to enjoy. 3 modes, fast flash, slow flash, static 20cm Length unstretched Up to 60cm stretched Diameter 3cm Batteries included (non replaceable) Colours chosen at random