Daiwa Provisor REX ZSS2800 28L Gold This is a 6-sided vacuum insulated cooler box. I purchased it in July of this year, but it was larger than I expected, and as a result, I haven't used it and have been storing it. I probably won't be using it in the future, so I've decided to let it go. Although it is a new, unused item, it has been in someone's possession once, so please consider this when making your decision. Please refrain from considering this if you are overly concerned about details. Below is the standard information from the internet for your reference. Specifications/Standards ● Capacity (L): 28 ● Weight (kg): 6.8 ● Internal dimensions (cm): 27 x 42 x 23.5 ● External dimensions (cm): 40 x 57 x 34 ● *Size indication is depth, width, height ● *Internal dimensions are at the narrowest point, external dimensions are at the widest point. ● *Weight is for the cooler box body only. ● *The insulation material for the top lid is vacuum panel + styrofoam for ZSS, and styrofoam for others. ● *There is a stamp on the bottom of the cooler box as a shipping inspection certificate, but it is not a product defect.