Premium ABS plastic material, eco-friendly and non-toxic, comply with international standard CE ROHS SGS. Safe for kids and adults. This product helps users to stop smoking, ADHD, obsessive-compulsive disorder, anxiety, post-traumatic stress disorder, meditation and boring, with sedative effect own an effective psychological hint, quickly regulate the mood. Suitable for all ages. 2 2/5"H × 3 3/20"DIAM