Goose Down, Hollofil, Quallofil Sleeping Bags: Pros & Cons

A friend recently called me, explaing that he's been shopping around for a zero-degree sleeping bag and wasn't exactly sure about the specific strengths and weaknesses of the various materials: goose down, hollofil, quallofil.  Here's how I see it:    When it's dry, goose down is definitely an efficient insulating material.  When it gets wet, however, it tends to lose that ability.  The synthetic materials - hollofil, quallofil, and others - are similar products by different manufacturers and are reliable insulators, whether wet or dry.  Pound for pound, I believe down has more read more