The new Defender bottle from Norwegian startup Vitaloop uses yet another system for creating potable water, coupling a five-part filtration setup with a battery-powered pump to purify out every nasty bit down to virus size at the push of a button. Simply collect water, hit the button and let the Defender do all the work to keep you hydrating safely.

Vitaloop's purifier design hinges around a five-part "Nanoflow" multi-filtration system that starts with a basic mesh over the water inlet for immediately filtering out larger sediment and particles. The much finer hollow-fiber micro-filter then takes care of 99.9999% of bacteria, protozoa and parasites, while a halogen-based purifier handles up to 99.999% of viruses. An activated carbon filter is responsible for heavy metals and chemicals – reportedly providing a clean, pure taste – and the "revolutionary" graphene filter works with the others to remove micro-plastics, deliver antibacterial support, and boost efficiency.