In the Greek alphabet, Epsilon (Ε, ε) is the fifth letter, but its meaning extends far beyond its position. In its symbolic form, Epsilon represents something foundational, a starting point. Equally capable as stout and durable training attire and ultra comfortable loungewear, Epsilon brings modern style and old school quality to your regimen. Built from a luxurious cotton french terry reinforced with genuine Cordura® nylon, Epsilon is built to put in hard work in comfort and style. Older design. Lightly used.