Containing only clear, non-staining purified water, these ice cube mats are safe to send along in your little ones lunchbags. Food safe, reusable and durable, plus remaining flexible when frozen, Thermos ice cube mats can also be used to wrap around objects , ease the pain of bumps and bruises as well as keep lunches and snacks cool  The perfect cooler mat for use in lunchboxes and bags including the Thermos Freeport Lunch Kit range. Multiple layers of polyethylene are heat-sealed together...