Keep the kids' lunch cool as a cucumber with this handy chill pack | Certified food safe, this big pack of chill will ensure lunch stays fresh and crisp | The slip-on cover is machine-washable and it fits snug as a bug in the Big Cooler Lunch Bag - a match made in heaven | Features | Stays cool the whole school day | 4-layer aluminium gel ice pack | Certified food safe | Machine washable cover | Snugly fits into the Big Cooler Lunch Bag