I bought a sheet of 1/8" closed-cell foam. I cut 3 pieces, a bottom and
top liner, and a band that goes around the inside of the trunksack. While
I glued the band to itself, it all stays in place by friction. It's thin
enough not to affect the bag capacity, provides some thermal insulation,
They are fantastic in all weather, any length of ride. I've done
bikepacking trips that were multi-day rain settled in for the long haul. I
don't bag things, just stuffing them in. Here's the details of how they
work in my experience:
-- TrunkSacks: some minimal water will seem in at the expose
