and they're still doing great. The foam is starting to compress a bit but the fabric and frame are fine. Rebuilding them shouldn't be any big trick.
We've got 4. I sometimes think about going with semi-permanent cushions but we LOVE the versatility of moving them to where we need them and being able to flatten them to sleep in the cockpit or sun on the foredeck. They're also great for outdoor concerts/picnics, etc.
We have friends who have the WM copies. Not so good.