Imprint Method: Unimprinted - Make a caring statement with these heart-shaped foil balloons! Measuring 17" and offered in an assortment of colors, these balloons have XtraLife extended float time and a generous amount of imprint space to make your logo buoyant longer. Each balloon features a self-sealing valve and is made from new XLite composite material. You can fill up to 30% more balloons on one tank, save up to 22% on helium costs and use 25% less helium per balloon. Float time lasts for 5-7 days. Ideal for corporate events, birthdays, weddings, Valentine's Day parties and much more!