Spartan Industrial - 3” X 4” (1000 Count) 4 Mil Thick Clear Reclosable Zip Plastic Poly Bags with Resealable Lock Seal Zipper - Heavy Duty and Durable

I use 4 mil 3x4 zip lock bags, each bag fits about 20 penny sleeved cards perfect for deck builders. And of course bags for tokens and what not. 3"x4" bags