Anyone have a Britax first class plus car seat? If so can you buy covers?

[booda]

Thinking of getting this one as want to have LO rear facing as long as poss, and he's rapidly outgrowing the silver cross one he has......also wondering if you can buy seat covers anywhere? he's a projectile puker lol, and we'd need another cover to rotate with!

https://www.halfords.com/webapp/wcs..._productId_800295_langId_-1_categoryId_165764