BigJigs Trolley Sort Cow What a beast! Will soon be driving a carriage in the form of a cow through the house. It is a very multifunctional car and good for the physical skills of your child. The BigJigs trolley Sorting Cow has a storage space where toys can be stored, but also has a few holes in the sides through which the matching blocks can pass. Nice to play with! This walker can already be used at an age from 12 months.