• I finally got a reply from the company.
    Turns out I was right. The guy was on vacation, and thanks to an old post of theirs suddenly going viral his email address got jammed with hundreds of emails.
    But anyway... He apologised about the missing tea infuser and is sending one straight out today, so once I receive it I'll have a quick go and give you all more information, then I'll go ahead and place my order.
    I'm going to order them with the standard screw cap and tea infuser, but I'm trying to find out the price of the sports caps on their own so that if anybody wants to use their flask with cold drinks, they have another option.

    I'll keep you updated!