YETI fresh-for-hours, easy-to-clean lunch box is your one-way ticket to packing a lunch you’ll actually look forward to. It’s loaded to the gills with insulation power, engineered with a water-resistant exterior, and built with a rock-solid form factor so it holds its own when riding in backpacks and bags. COLDCELL FLEX INSULATION - A lightweight, closed-cell foam flexibly folds over while offering superior temperature-holding power. Easy-to-clean leakproof liner FOOD SAFE - From fruit to subs — it’s all safe to store EVA MOLDED BOTTOM - Gives your food a firm landing pad and prevents any water from seeping in DRENCH DEFENSE - Engineered with a water-resistant exterior. *There is staining on one of the handles, and the back/bottom of the lunchbox, shown in photos. I have cleaned the inside and outside thoroughly and could not remove the staining but I’m not sure if there is a cleaning agent out there that could better remove those stains.