New Pig Oil Mat | 100 Heavyweight Oil Absorbent Pads | 28-Oz Absorbency Per Pad | 15″ x 20″ | MAT403. TOUGH, DURABLE and ECONOMICAL – Eight layers of 100 percent polypropylene are thermally bonded to make Pig mat the strongest mat on the market; won’t rip, tear or fray even when saturated.