A pack liner is a big, heavyweight, plastic bag used to ensure a watertight pack while on a canoe trip. Yes, waxed canvas is water resistant, and no, not everyone always uses a pack liner. We include them and offer them to help ensure good canoe trips. A pack that gets dumped into the lake can fill up with water and sink. Sunk packs suck-- don't suck, use a pack liner.
Envelope Large, Gusset Medium, Gusset Small, Gusset Large
Envelope Large 28" x 40", Gusset Small 18" x 14" x 36", Gusset Medium 24" X 20" x 48", Gusset Large 28" x 24" x 60"
Heavy Duty 4 mil plastic