Made from 100% extra-fine Australian merino wool jerseyMerino wool is 100% biodegradable, renewable, wrinkle-resistant, UV-resistant, and naturally breathableMoisture-wicking, odor-resistant, and temperature-regulatingFactory is BSCI certified (Business Social Compliance Initiative), an organization for auditing and improving social gauges in provider nations for all consumer productsMade with care in Dongtai, ChinaMoisture WickingBreathableProduced in BSCI certified factory 100% Merino Wool All-Season Long Sleeve Base Layer Tee