Waterproof seat covers

I have an 11 seater 110 CSW, with Trakker highbacks in the front and second row. Can anyone recommend a set of hardwearing, waterproof, seat covers, please? I'm looking to cover all of the seats, including the benches in the back.

Thanks!

Halfrauds do a set, or a search on Ebay will probably turn something up.

Tesco do high and low back waterproof covers for about £8 for a set of 3. I have them fitted to all my 110 seats, apart from the bench seats.
They don't fir perfectly as they are meant for any seat, but they are cheap and child proof and I have fear about washing the inside of the Landy out with a hose.