Where can i find a slipcover for just the seat cushions?

i have a couch that's leather on the exterior but the cushions r a beige suede and its unbelievably hard to keep clean! i dont need a slipcover for the entire sofa. i just need one for the cushions. is there any place that sells that? i have freakin beige towels on them right now lol n i really cant live with that haha please help!!