Qualatex® 11" balloons assure best performance with air or helium. Q-Lites may float for 6-8 hours with helium, depending upon environmental conditions. Q-Lites remain lit for 24 hours or more with premium LED technology to deliver greater short-term intensity and longer-lasting illumination. Child-safe LED light disk is attached to the balloon for safer celebration. Easy, push-of-a-button operation offers instant illumination. Instructions are included in each package. Different coloured LED lights enhance each balloon colour to give your celebrations glowing reviews.