Colours: Valid in white or multicoloured. Great for parties: The stunning balloons make the perfect decoration for parties and occasions, displaying wonderful flashing LED lights! Once activated, the balloons can illuminate for up to 15 hours. Size: 23cm approximately once inflated. Options: Choose from a 10-pack, 30-pack or 50-pack. Easy to use: Easily fill with air or helium, simply pull the tab to activate the light and inflate like a regular balloon. Balloons: Get a set of LED flashing balloons. Led Flashing Balloons | White | Living Social