Dogs Bed

I have a 7 year old german shepherd she weighs about 100lbs. i have been looking for a bed that is comes clean, is washable, durable and wont get all flat. if anyone has a big dog and has found a really great dog bed. let me know what it is. she doesnt like laying on the floor, she tries to lay on a pile of clothes or a pillow if on the floor. i need one big enough for her to lay all the way out. please give me your advice,links etc. Thanks

I have a 1 year old great dane mixed with a bull mastiff and he did the same thing. But we gave him 2 sleeping bags to lay on and hes happy lol. We couldnt find a big bed for him. try blankets she might lay on that. gl