Inventories

12 Months Ended

Dec. 31, 2019

Inventories consisted of the following at December 31:



(In thousands)	2019		2018
Raw materials:
Fluids systems	$	141,314	$	148,737
Mats and integrated services	5,049		1,485
Total raw materials	146,363		150,222
Blended fluids systems components	39,542		38,088
Finished goods - mats	10,992		8,586
Total inventories	$	196,897	$	196,896

Raw materials for the Fluids Systems segment consists primarily of barite, chemicals, and other additives that are consumed in the production of our fluids systems. Raw materials for the Mats and Integrated Services segment consists primarily of resins, chemicals, and other materials used to manufacture composite mats, as well as materials that are consumed in providing spill containment and other services to our customers. Our blended fluids systems components consist of base fluid systems that have been either mixed internally at our blending facilities or purchased from third-party vendors. These base fluid systems require raw materials to be added, as needed to meet specified customer requirements.