Constructed with a durable poly outer shell and inner liner which is then riveted together with foam insulation in between. The lid is foam cushioned with a durable marine grade vinyl cover that will hold up to years of being used as a seat or step and it's secured by a full length hinge across the back. Underneath the cooler is a 2 1/2" long drain that can be inserted through a hole drilled in the floor of the trailer for drainage. There is also a 1/2" removable drain plug inside of the cooler. Great for keeping drinks and food cold on those long road trips, hot days at a rodeo or weekend getaways.