Giant building blocks are ideal for indoor and outdoor play. Includes 19 pieces with base width of 7cm and height of pieces varying from 7-21cms. Smell is typical natural linseed oil which is completely harmless, and it will decrease over time. For care simply use mild soapy water with a damp cloth for cleaning. Dry immediately. Please do not submerge in water and do not use disinfectant or hot water.