I had the chance to test out these covers after getting caught out in a down pour at Valemount (great park by the way!).
I recently bought a brand new pick up and didn't want to have custom seat covers for two reasons: a) I really like the interior as is and don't want to cover it up with; b) expensive custom seat covers.
I had them stashed in the back and they came to rescue big-time! It saved me and my friends from trashing the interior and cleaning afterwards was easy (hose them down and let dry). Bang for buck, you can't go wrong with these: I now have full coverage for my interior for less than sourcing 1 row of custom covers.
Easy decision for me. $$ well spent, trust me.