The prAna Men's Altitude Tracker LT 1/4 Zip is a versatile, lightweight layering piece made from a buttery-soft recycled polyester and elastane performance knit. Key features include 4-way stretch, moisture-wicking properties, a quarter-length zip with a chin guard for ventilation and comfort, thumbhole cuffs, and a concealed zippered pocket. It's designed for activities like workouts and trail ascents, offering comfort and mobility with its standard fit, raglan sleeves, and side panels.