COLDCELL FLEX INSULATION - A lightweight, closed cell foam flexibly folds over while offering superior temperature-holding power to keep your lunch fresh. FOOD SAFE - From fruit to subs - it's all safe to store. YETI THIN ICE COMPATIBLE - Perfectly homes and insulates your frozen YETI THIN ICE. Optimised for our medium size. EVA MOLDED BOTTOM - Gives your food a firm landing pad and prevents any wetness from seeping in or out. This insulated fortress is built to safe keep anything you're craving, whether it's a hearty sub that tastes just as fresh as when you packed it or a cold drink ready to be relished