Product details:

An ultralight T-shirt for warm-weather travels and everyday comfort, the Sphere Long Sleeve Low Crewe is made with soft and durable 130gm Cool-Lite jersey fabric. Back High Point Shoulder to Hem: 27.6" / 70.3 cm (Size M) Fit: Regular Drop tail hem for added coverage Layer: First Layers Medium = 131 g / 4.62 oz Cool-Lite - A lightweight and breathable fabric blend that is designed to wick moisture away from the body 52% Merino Wool, 35% TENCEL, 13% Nylon Fabric Weight: 130 Featherweight