Best document carry
Passport, permits and cash, on your body
RFID-blocking neck wallet
Under-clothing, RFID-lined
Your TIMS card and national park permit get checked repeatedly on trail and a lost passport in Nepal is a week in Kathmandu — the RFID lining is largely theatre, but the "attached to your body" part is not.
Permits reachable at a checkpoint without unpacking
Survives a bus roof, a hotel room and a crowded Thamel street
Holds the USD cash your visa fee needs
Sweaty against skin on a hot approach
RFID blocking solves a mostly theoretical problem
Awkward to reach under three layers
Not for you if: Nobody. Even if you dislike them, carry permits somewhere better than a jacket pocket.
Check price on Amazon