I posted this over at OzBargain but didn't realise that it was against the rules. Can only be posted in the forums section.
WHAT IS THE ULTRABOOST 21 RETURN GUARANTEE?
You can now try Ultraboost 21 running shoes for 30 days. You can return them for free for a full refund, in any condition - no matter how many miles you've run. Visit our returns portal to begin our normal return process here.
*Offer applies only to Ultraboost 21 and excludes all other Ultraboost footwear, such as but not limited to Ultraboost 20, Ultraboost DNA, Ultra4D, Ultraboost Uncaged.
There's not much information on the Adidas NZ website so I did a bit of digging.
The USA site states:
You can now try the new Ultraboost 21 for 30 days. If you don't agree that it's the most comfortable shoe you've ever worn, you can return free for a full refund, in any condition - no matter how many miles you've run. Visit our returns portal to begin our normal return process
These are the answers I got out of live chat:
What is day 1 of 30?
Return policy for this is you have 30 days to return the item starting from the day you received it
What is day 30 of 30?
The day you made the return already counts within the 30 days. Even if you book return on the last day for 30 day return period you are still eligible for a refund
Can I do this in-store?
Currently this offer is only available on our website, but you can ask your nearest Adidas store if they have applied this return policy as well.
How long is this offer available for?
This offer will last within a year/ changes may vary within the website. you just need to check before you order :)