NWT YETI DayTrip Charcoal Grey Lunch Bag YETI's DayTrip lunch bag gives you a fresh-for-hours, fold-and-go, easy-to-clean lunch bag. COLDCELL FLEX INSULATION - A lightweight, closed-cell foam flexibly folds over while offering superior temperature-holding power. THERMOSNAP CLOSURE - Magnetic closure will keep your hot foods hot and your cold food cold. FOLD-AND-GO PACKING - Once dining is done fold it up, hook it closed, and stow it away. FOOD SAFE - From fruit to subs -- it's all safe to store. ADJUSTABLE GRID - Decide the size of your lunch bag by sliding the closing hook into one of the loops. Smoke-free home. Fast and careful shipper. Hey, thanks for checking out my closet.