Made of high-density polyethylene. A new and unique approach makes this dissecting board more convenient than any other found on the market today. It is no longer necessary to buy different sizes as this board offers a large surface on one side and two smaller ones on the other side. Made of heavy-duty stain-resistant thick polyethylene, it will last for years to come without changing shape, bending or swelling. Will not dull fine surgical blades. To contain fluids, a drain groove is carved all around the edge of the DissecTable. On one side, you will find a large cutting area including dimensional scales in inches and centimeters, along with a 60 x 80 mm gridmade of 48 x 10 mm squares. Six-dimensional circles are also printed from 1/8 to 5/8 in. and 4 to 14 mm in diameter. Flip it over and the other side offers two cutting boards half the size with the same dimensional features printed on each one of them. All corners have rubber feet giving more stability to the working surface.