Calcutta Roto Molded High Performance 30L Tan Cooler 1.Freezer Style Lid Seal to insure that the seal between your lid and the cooler box is maximized. No leaks and loss of cold here folks. 2.Fully Filled Premium Insulation 3.Heavy Duty Rubber Latches that are durable and long lasting 4.Tough Roto-Molded Thick Skin provide a durable structure for our coolers 5.Traction Lid with Built-in Ruler