BUILT has conjured up a nifty product to bring you, your pet, and the planet together. Whether you're taking your dog for a walk to the park or heading out on a train to pick up a rescue cat, this flask will keep wet or dry food at the perfect temperature for the entire time. Its reusable nature makes it a viable alternative to plastic food containers. Plus, it being an airtight steel container means there's no chance of anything leaking out. State-of-the-art technology means it can keep food hot for huge amounts of time (up to six hours), but remember to pre-heat the flask by pouring boiling water in for 30 seconds beforehand. It can also keep food cold for up to 24 hours – you'll just need to cool it down first with cold or iced water for three minutes, then add the cold food and immediately seal.