In the 1960s and 1970s, Frostline, a company out of Broomfield, Co., offered sew-your-own-gear kits. The company is now defunct, but the gear is still going strong! You would never know this vest was 50 years old. The retro style might tip you off but not the quality! The inside is lined with gorgeous navy blue rip stop fabric, and the outside is durable and thick. I ship same or next business day!