While many young people enjoy camping and outdoor activities, using gas bottles and cookers with open flames can sometimes feel intimidating. Pokai is a drink bottle that uses a rechargeable battery to easily and safely boil two cups of water, the usual amount required to reconstitute a dehydrated meal for two. The one-litre bottle contains an immersion-like coil that heats the water inside when connected to the portable battery. The battery can be topped up by solar charge throughout the day, while a USB port also allows users to charge their electronic devices in an emergency.