Ultra-lightweight fabric with a unique hex-shaped pattern that traps some warmth but breathes as you run. Material wicks sweat & dries really fast. 4-way stretch construction moves better in every direction. Built-in fitted, extended sleeve liner for added protection & zero distractions while you run. Free cut cuffs & collar lay flat & feel super smooth & light . Dropped hem for enhanced coverage. Raglan sleeves. 360° reflectivity.