Wash wears this cargo vest throughout the series with a few of his flightsuits, and of course, his Tropical Shirts.
More after the break...
Some more promo images...
Some screencaps, first from the Pilot, worn with his Orange Flightsuit:
In Safe, with one of his Brown (Tan) Flightsuits:
In Trash, with one of his Brown (Tan) Flightsuits, and with his Green Flightsuit:
In The Train Job, with one of his Brown Flightsuits:
In Our Mrs. Reynolds, with another Brown Flightsuit:
In Objects in Space, with another Brown Flightsuit:
With his Red Flightsuit in Jaynestown:
In Out of Gas, with his Red Flightsuit as well:
In Heart of Gold, with his Red Flightsuit, and Green Flightsuit:
My Photobucket Album for Wash.
Serenifly Costumes site for Wash.