i picked these up at a local sale today, thinking of my fellow bpl geeks.

an older & solid pair of down pants, by Frostline, possibly made from a kit. they are not UL, more of the durable sort, reinforced ankles, full zip, made of a sturdier ripstop nylon. 21 oz. Size is medium, waist is highly adjustable, approx 32-36 inches with elastic & velcro tabs. Inseam = 30″