Using the ZURU Neon Bunch O Balloons Slingshot is easy. First, fill the Bunch O Balloons with water. They self - seal and fill rapidly. Then, take one of the filled balloons and place it in the slingshot pouch. Pull back the slingshot and aim at your target. Let go to fire the balloon. When using the slingshot, make sure to aim away from people's faces to avoid injury. Also, be careful not to over - stretch the slingshot as it may damage the elastic. After use, dry the slingshot and any remaining balloons to prevent mold and extend their lifespan. Store the set in a cool, dry place until your next water fight.