Air Drying Clay - Terracotta 12.5kgIdeal for school use! This air drying clay is great for the classroom, it is easy to work with and will air dry in a couple of hours ready for decoration! Comes in a re sealable plastic bag, once sealed clay does not dry out! Weight = 12. 5kg Terracotta in colour. Air dries. Can be painted with various mediums. Can be varnished for a complete finished.