Randomly got the Classic Helmet Pack

I started playing Halo 5 around sometime in December but a few days ago the Classic Helmet Pack just appeared in my unopened Req pack inbox after I finished a match. I’m sure I never bought the pack or watched the mixer that gave you it a few months back. Can anyone explain this?
Edit: well I’m not complaining or anything, those helmets are cool. I just want an explanation.

I’m not sure if it is possible with that pack but maybe someone gifted it to you.

> 2535417830920719;1:
> I started playing Halo 5 around sometime in December but a few days ago the Classic Helmet Pack just appeared in my unopened Req pack inbox after I finished a match. I’m sure I never bought the pack or watched the mixer that gave you it a few months back. Can anyone explain this?
> Edit: well I’m not complaining or anything, those helmets are cool. I just want an explanation.

Sounds like it was gifted to ya!

It was either gifted to you or it could have been a Mixpot reward and you haven’t logged in since you got it. If it was gifted though, the pack would show that it was a gift on it and I think who it was from