Our LED Heart Balloon is the perfect decoration for weddings, birthdays, Valentine's Day, and anytime you want to share some love. Each Heart Balloon is made of mylar. Buy a dozen to create an impressive balloon bouquet. (3) replaceable AA batteries are included & installed. Please read all instructions on the package before setting up the balloon or just watch the YouTube video. Sold by the individual balloon. Please order in increments of 1 balloon ♥.