Wine/Bottle Holders - Plastic

Hi, new to caravanning and have been on a couple of trips so far, I am searching for plastic bottle/wine carrier to store our wine etc outside the van and carry the bottle from home to the van etc - we have been on a couple of trips and have used the cardboard ones you get free from the supermarkets - but without being too graphic, I have suffered from a soggy bottom ! I can't seem to find one anywhere - I'm looking for one/two that will take 4/6/8 bottles - almost the type of thing that a milkman would use to transport and store my bottles - any suggestions anyone?