The famous Vertical Blue stainless steel drink flask.
Made entirely from 304 stainless steel with a laser-engraved bamboo cap, this 750mL (25oz) vacuum-insulated bottle will keep your electrolyte drink cold, or your warm-me-up tea piping hot!
Drop it, dunk it, take it to the bottom of the reef... you're not going to be able to damage this rugged piece of kit! We've tried for 7 years, and the original versions are still going strong!