That's really helpful, thanks.
I did look on there previousy and can see that the soppa swoppa bands look like the ones I've seen in stores and online, the packaging says they're for OS2 Series and they don't look like the right ones for me. But it could just be that the picture isn't correct.
Looking at the sets, mine look like the Vision Series set, but even though the description says "including swoppa band", there doesn't appear to be one in the picture, which is why I was trying to get advice from Masuri. I should probably just order one and find out, right?