Also depends on the kind of nylon. Some of it is sewn with fewer threads per inch...which means the weave isn't tight enough to hold the water out even after it's treated. If it's a tight weave, the treatment might work for a while. But like Tim said, they'll still make it easy to pack and protect it while you're setting it up. I guess DWR isn't as slippery as sil so it might be a bit tougher to pack an underquilt inside, but they'll still work.
Why not send it back to the company and demand a refund?
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