The HumBird [ Merino x Tencel Collection ] is made with jersey fabric that has 47.5% Merino EXP, 47.5% Tencel**, and 5% spandex. It has a fabric weight of 200gsm (grams per meter) and is an ideal material to use for year-round comfort.
Both Merino and Tencel™ (aka Lyocell) are known for their breathability, moisture management, anti-bacterial properties and being gentle on the skin. These materials are combined together to make an outstanding fabric that is comfy and environmentally responsible.
** Tencel is a registered trademark, and is used here pending licensing.