The initial run of Halloween costume Back to the Future II Mags sold out last December, but you won't need a DeLorean to finally cop a pair.

The Universal Studios-licensed replicas have just restocked and sizes are already disappearing, so you'd better act fast if you're looking to get your Marty McFly on. Just like Nike's official 2011 release, these costume Mags actually light up and come equipped with a charger.

The only thing that'd make these better is tricking them out with this custom kit that'll make 'em look like the real thing without the real price tag.

Head over to HalloweenCostumes.com to cop a pair now for $90

[via Halloween Costumes]