The post about a new down sleeping bag getting pretty nasty just reminded me of this…
Western Mountaineering's website says tennis balls in the dryer are good for preventing the down from clumping after you wash it. Nunatak says tennis balls can tear the outer fabric. What do you all think?
I've used the tennis balls on my TNF Beeline once, and they seemed to work quite well. Is it because of the lighter fabric on Nunatak's bags that the tennis balls aren't recommended, or is there some other factor at work here?

