BUILT Hobo Designer Neoprene Lunch Tote, Black (LB17-BLK) This mid-sized, stretchy neoprene tote, available in a huge variety of fun patterns, is the gold standard among reusable insulated lunch bags. Keeps food cold (or warm) for up to 4 hours, depending on the outside temperature. The flat bottom keeps it upright, perfect for bottles or dishes that you don't want tipping over. Soft-grip handles make it easy to carry. It's vinyl-free, PVC-free, tested for lead safety, and machine-washable so there's no need to worry about spills. Stores flat, but expands to fit a variety of containers. The zip closure keeps it secure. 12.25 inches wide by 7.9 inches high.