Battlepass Voucher

Apologies if this is the wrong category for this, but I have a concern regarding the rewards pass voucher from the Deluxe edition: Am I able to save the voucher for a future pass, or does it expire at the end of this season? I haven’t found any clear verbiage outlining it. I’m not a vandal main, so I was thinking of waiting for another final shell skin. But I want to make sure I’m not wasting my pass! Thanks!