Grimms set of 4 boats, includes 12 pieces. Each boat with approx height = 10 cm Wonderful for small children to stack and combine or sort colours, play with the boats and also for building. Rolling Boats Materials: lime wood, non-toxic water-based colour stain. IMPORTANT: If you clean Grimms wood products only use a damp cloth. Please do not submerge in water and do not use disinfectant or hot water.