18x18x3/16 Hydrophobic Pads. Will not tear! Will not Shred! Pads can be custom made up to 15x 400 to cover large areas where spills can take place. Simply lay it down and walk away. When your pad is full you can wring it out and re-use it up to 20 times. Each 18x18 Pad will Absorb up to 0.39 gallons per pad.