i need to put some seat covers on my supercrew f250 on of these days. anybody have any suggestions? i want good ones that stay in place and can be washed.

I have Marathon cordura covers on my pickup. They're about 3 years old now and still look great. They're easy to take off and wash, too. I don't recommend the camo prints, though. Nylon can't absorb ink so the patterns are just printed on. They'll fade.
MARATHON

Plus one on the Marathon, mine are 5 yrs old and still look good, and I haul a dog where ever I go. Rio7

If time is of the essence, you may want to check with Marathon before ordering. I saw on another forum earlier this month that a poster's wouldn't be ready until July if they had to be shipped but could've been picked up after three weeks. I don't know why the difference in times.

Headwaters are another option. When I separately ordered front and rear sets it took about two weeks to get them. They're supposed to be quite similar to Marathons as the owner got his start there.

I love my Wet Okoles. They are great for wetter climates or for muddy, wet dogs. I even had a seat warmer added for my passenger (wife).
http://www.wetokole.com/

This is what I have used on my F250 Crew Cab since 2002, on my second set on front seats.