This is a great activity to learn about gas exchange in the system through play using the two colored balls. Whats included: 1. Two Pieces of Wooden Anatomy 3. Wooden Tong 4. Two balls Not recommended for children under 3 yrs. Two balls are choking hazard. Measurement: Balls diameter 1cm Safety: EN71 and CE certified Care Instructions: Gently wipe with slightly damp cloth. After wiping please let them dry completely. Not recommended to use soap, soak in water or to put in a sterilizer. Keep away from humidifiers and heaters. Warning: Choking Hazard - This toy contains very small wooden ball shaped toys and is not suitable for children under 5 years old. Please supervise your child at all time when playing with this toy. Please Note: This toy is hand crafted and not mass produced. Because of this it is normal for there to be some variation in paint color, wood color, and small size variations. Additionally, it is normal for there to be some imperfections in the coating of the paint and/or for the paint to rub off betwee
