Negative ion jewellery is a hot trend theme - many athletes and health-conscious people swear by it. According to the ancient Yin-Yang theory, negative ions can compensate for a surplus of positive ions in our environment. It is especially nice when we are accompanied all day long by the cheerful, balanced smile of this smiley pendant. The pendant is made of skin-friendly silicone with an integrated neodymium magnet. There are also colourful magnetic bracelets that match the pendant!