What size ziplock for 5x7 holders?

[Jerry Bodine]

So any workaround for 4x5 new zip locks?

The 6x8 bags are fine for 4x5 holders.
http://staticbags.com/FASST40608.html

[mike rosenlof]

My usual bag for 5x7 film holders is to use the black bag that comes in Ilford's 100 sheet boxes of 8x10 paper. 2 holders fit well. I don't get a zip lock, but it keeps the dust and lint out.