20 LED Light Up Balloons Mixed Colors Flashing

【 More darker the environment, More brighter the balloon. and you can take out the LED and remove the gauze/wrapping from it to make them brighter inside the balloon】 【Colorful Balloons and Colorful LED Light - Flashing】, and possible the LED balloons did not to fly. because the LED is so heavy. You need to fix it in someone place (trees, wall, roof or others) LASTS FOR HOURS FOR NON-STOP PARTYING: Inflate the balloons to 12 inches (30cm) with either helium (no helium tank required) or ordinary air, these decors will brightness up to 12 hours of continued use and remains cool to the touch. So, plan your event now and party from dusk till dawn! QUALITY LED LIGHTS: Each balloon features an integrated LED light that light up to 24 hours (maximum brightness up to 2 hours).