Multicam/ATACS backpack covers.
Been looking for a multicam backpack cover ever since Bushcrafters USA ran out of theirs. I just picked one of these up and it fits my 65l pack with lots of room to spare. Probably would cover an 85L pack at least. Great way to camo and waterproof (cover) your civi pack. And few camo packs are available. They also carry ATACS covers as well.