The seat bottom is cushioned leather/like material.
The ToyModel site does show some very nice pieces.
The WC-52 shown there has some problems for me:
1- The winch is set way too high on the front bumper. On 1/1 WC-52's the top of the winch is even with the fender ends. The TM winch, makes the TM truck winch look like an afterthought.
2 - The cab top pulls the top of the windshield at an angle, the 1/1 truck windshield was straight up vertical, with the top or without.
3 - The truck has no tow hitch. The main purpose of the truck was to tow a trailer or a small howitzer or a anti tank gun.
4 - Some pics at the bottom with different markings are those of a 1/6 truck from a 1/6er here in NJ and his truck has the winch set right and the tow hitch evident. I don't know what the story is but I've seen those pics posted elsewhere by the NJ guy.
The TM site has some pieces that will end up in my mancave.
TTT
Sometimes I am the windshield, sometimes, I am the bug.