The GO is Ocean Bottle's lighter, slimmer everyday bottle, the one you grab on the way out the door, slide into a side pocket or a bottle cage, and refill all day. It keeps the brand's clean, rounded look in a more compact 500 ml form that's easy to carry from the dive centre to the car to the trail.

It serves the same purpose as the rest of the range. Ocean Bottle says every bottle it sells funds the collection of ocean-bound plastic through plastic-collection programmes in coastal communities, so a simple refill habit adds up over time.

iDive stocks it in fourteen colours. Pick your colour above; the price is the same across the range.