2 jars appr. 100g each. This Air Dry Material is pliable and easy to use, simply take it out of the container, press it gently into your favorite Decor Mould and release it. Allow it to air dry. For best results, lay a damp paper towel over the casting to allow it to stay moist during the drying process. This will help minimize shrinking and any cracking from occurring. Non toxic.