The balloon is supplied uninflated. Insert the provided straw into the valve at the bottom of the balloon and inflate by blowing through the straw. Avoid overinflation to prevent bursting. Remove the straw and seal the valve by pressing the sides together. To deflate, insert the same straw and press gently to release air. To prolong the life of the balloon, avoid direct sunlight, air conditioning vents, frost or other extreme conditions. These balloons are suitable for decorative arrangements and party displays. Balloons