Best currency holder?

[Spartcom5]

Hey guys i recently acquired a ton of old bills. I need some holders for them and bought some that i thought were good but they have pvc.... Any holders that you guys buy that have no pvc and arent terribly expensive? i was looking at these Supersafe Standard Weight Currency Sleeves - Modern - Wizard Coin Supply or Safgard Currency Sleeves - Modern - Wizard Coin Supply

 

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[pat-tekker-cat]

The only archival envelopes I have available, are the Hanji mulberry bark envelopes.
They are natural paper and acid free, but you can't see through them.
If you got a ton of bills with duplicates, maybe buy some of the clear for the "show" bills, and get some acid free envelopes to store the duplicates in, just a thought. I have a couple of different colors, too, blue, green, yellow, pink.
Hopefully, others will chime in with suggestions, too.