DO-IT-YOURSELF BALLONS 1.Heart, Star, Round 2.A3/A4 ... through jumbo plastic straws. Helium is not needed. These balloons do not float, they are mounted. They are mounted free standing ... clip. The 100 count packs have stems and clips, but do not come with bases, they are sold separately .PH-18S ... SHAPE PH-28H A3 SIZE DIY PHOTO BALLON - HEART SHAPE DO-IT-YOURSELF BALLONS