A-4
Umriox 32PCS Mesh Zipper Pouch, Waterproof Bags for A4, Black
Black works well here because it doesn't distract from the product's main function.
Umriox Zipper Pouch, 13.0x9.0 in (12 Colors, 36 Packs), A4, Multicolored
You will like how these inserts can be layered for extra cushioning if needed.
Lot 4 H&H Arrow Hart Grounding Plug 20A 480 VAC
A nice touch on the VpCI-111 is that it is lightweight and adds no bulk.