How long will unopened Detail clay last?

[ShineMyCar]

I'm looking Pinnacle @ BOGO. I've never used clay, but I already have clay bar kit for first pre-winter detail. If I pick up 2 of these for future use, how long will they last unopened on the shelf?

Thanks

[SON1C]

I imagine years..

[Setec Astronomy]

yeah, years and years.

[ReflectiveAuto]

Skip the clay...get the Nanoskin Auto scrub...its a lot better...its faster...I did a Mazda 3 hatchback in 20min taking the decontaminates off...if u drop it...just wash it off and continue...can't do that with clay.

[SR99]

Yep, it's made of a plastic resin and abrasive grains so (unused) should last years and years for sure, maybe even decades.