REV is a leading designer, manufacturer and distributor of specialty vehicles and related aftermarket parts and services. We provide customized vehicle solutions for applications including: essential needs (ambulances, fire apparatus, school buses and municipal transit buses), industrial and commercial (terminal trucks, cut-away buses and sweepers) and consumer leisure (recreational vehicles, referred to as "RVs," and luxury coaches). Our brand portfolio consists of 29 well-established principal vehicle brands including many of the most recognizable names within our served markets. Several of our brands pioneered their specialty vehicle product categories and date back more than 50 years. We believe that in most of our markets, we hold the first or second market share position and approximately 62% of our net sales during fiscal year 2019 came from products where we believe we hold such share positions.
The specialty vehicle market is a complex and attractive market characterized by: (i) numerous niche markets with annual sales volumes generally between 3,000 and 25,000 units, (ii) highly customized vehicle configurations addressing unique customer applications and (iii) specialized customer bases and distribution channels (both dealer and direct). We believe the specialty vehicle market has historically been serviced by niche companies, which has created an opportunity for market leadership by efficient producers with the ability to scale resources, such as REV. We believe that our focus on manufacturing best practices and operational improvements, supply chain management, product innovation, and life-cycle value leadership strengthen our market position and ability to compete which provides an opportunity for market growth and margin expansion.
Our products are sold to municipalities, government agencies, private contractors, consumers and industrial and commercial end users. We have a diverse customer base with our top 10 customers representing approximately 22% of our net sales in fiscal year 2019, with no single customer representing more than 5% of our net sales over the same period. We believe our diverse end markets are favorably exposed to multiple secular growth drivers such as: rising municipal spending, a growing aged population, growing urbanization, growing student populations, the increasing popularity of outdoor and active lifestyles and the replacement of existing in-service vehicles including legislated replacements.