Specification:- Material: Polyurathane Foam/ PU Foam Feature: Multy purpose Standard Foam Size : 13 3/4" x 17 3/4" x 3/4" blue (350mm x 450mm x 20mm) Size : 13 3/4" x 17 3/4" x 1" yellow (350mm x 450mm x 25mm) PU Sponge Feature:- -Soft surface ,will not harm item surface. -High efficiency to absorb water and oil. -Because sponge have highest first pass removal efficiency clean operation with almost no dust emission and it's rigidity, tensile strength and durability perfect for cleaning applications. -Highly chemical resistant and non toxin. -Exellent shock absorption, secures items in transit or storage while diffusing any energy created by impact -size:18" X14"