This is a gender reveal balloon. I purchased two, including a spare, and have one left, so I'm selling it. It's about 90cm in size when fully inflated. The following is copied from the website: [Set Contents] 1 gender reveal balloon and 1 bag each of pink and blue confetti. [Gender Reveal Balloon] A perfect balloon for announcing the baby's gender. It contains blue confetti for a boy and pink confetti for a girl, allowing for a surprise reveal when the balloon is popped. [Easy to Set Up] Simply put pink or blue confetti into the balloon and inflate it with helium or air. To pop the balloon, use a needle or toothpick. The black balloon hides the confetti inside, creating a sense of surprise. [Versatile] A convenient item that can be used at various events such as celebrations, baby showers, bridal parties, photoshoots, and video recordings. [Create a Festive Moment] A glamorous item to liven up the moment of gender reveal. Let's create a fun and celebratory moment together.