BYO B-LB35-HTC Rambler Insulated Neoprene Lunch Bag, Houndstooth Black 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. Zip closure keeps contents secure. The flat bottom keeps it upright, perfect for bottles or dishes that you dont want tipping over. Soft-grip handles make it easy to carry. Its 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. 10 inches by 13 inches by 6-inches.