These balloons really are magic and have been a best seller at Hamleys since 1947! Just put a small blob of Magic Plastic resin on the end of the tube and blow to create a GIANT magic balloon. Unlike real balloons, Magic Plastic doesnt burst - if you get a hole, just pinch it together to seal it up. The Hamleys Magic Plastic 4-Pack is the perfect party-piece for over 6s - and yes, that most certainly does include grown-ups. Includes 4 primary colours, may vary from image shown.