Bibs Couture Sage Cloud Cloud Glow Night Latex T1 2 Units are physiological pacifiers that incorporate a large protective shield with a practical glow-in-the-dark effect. The curved tip promotes tongue positioning and a sucking technique where the sides of the tongue wrap around the nipple, just like when breastfeeding. Simply hold the pacifier close to a light for 5 to 10 seconds to activate the effect. The pacifier glows for more than 8 hours.for babies from 0 to 6 months.complies with the European standard EN 1400+A2.