Foredecor's HD metallic balloons are great for Brthdays or any party events. The balloons are manufactured with a thicker latex to prevent easy popping and deflation. These HD metallic balloons are manufactured with a stronger latex to prevent easy popping and can hold helium for longer periods. Technical Details: The latex balloons inflate to 12" Or 1 foot in size. Package contains an assortment of colours which are shown in the photos. Shape: standard balloon.