The Zoom was introduced by Lyons Maid in the spring of 1963 and was a tie in with the Steve Zodiac Fireball television series. It featured distinctive horizontal sections in lime, lemon and strawberry flavours.
I haven’t seen one for years, but Punky Pins have immortalised this retro ice lolly in necklace form as part of their summer collection. They are just calling it a Rocket Ice Lolly Necklace but it is most definitely modelled on the Zoom.
It measures 9cm high and comes on a silver-plated ball chain. It costs £15 from Punky Pins.