Stackable: These lunchboxes are also stackable so you can take plenty of food with you on the go and they will also save you lots of space in your kitchen. Thermal Lunchboxes: Get a premium thermal lunchbox! Options: Choose between three options - one, two or three layers. Colours: Valid in blue, pink and green. Features: These lunchboxes are leakproof and will keep food warm for 1-2 hours. If you have cold food they will keep your food cool for 2-3 hours. Material: Made from a food grade PP material and feature a durable stainless steel interior. Stackable Thermal Lunchboxes | Living Social | Living Social