Icebreaker Size Chart Styled after the classic bike jersey and designed for maximum breathability and durable, quick-drying performance whether you're on two wheels or two feet, the Strike Light Short Sleeve Half Zip is ideal for warm-weather cardio adventures. On the main body of the shirt, Icebreaker used 155gm jersey Cool-Lite(TM) fabric, which blends soft merino wool with natural Tencel(R), as well as corespun fibers, which feature a nylon core wrapped in merino wool for added strength and durability that maintains next-to-skin softness. In key areas, Icebreaker used 145gm eyelet merino mesh fabric to increase breathability on hot, active days outdoors. Strategically placed bonded shoulder seams eliminate chafing and reduce bulk. Features: - Cool-Lite(TM) fabric for faster wicking - Corespun fabric for enhanced durability - LYCRA(R) content for stretch and mobility - Zip neck collar for temperature regulation - Reflective center front zip for visibility in low light - Forward set side seams for comfort - Strategically placed merino eyelet for ventilation - Raglan sleeve construction with bonded seams prevent chafing - Center back length: 74cm/29" Size L - Icebreaker reflective heat transfer logo - Fabric: Body: 50% Wool, 33% TENCEL(R), 12% Nylon, 5% LYCRA(R) Eyelet: 51% Wool, 34% TENCEL(R), 15% Nylon - Product Weight: Medium = 170 g / 6 oz - Alternate images may show different colorways, yet accurately display product features