I wore it once because I don't like wool. ARCTERYX Arc'teryx short-sleeved T-shirt ARC'LOGO EMBLEM SS WOOL Arc' logo emblem 29129 Men's It's an ivory color. It's recommended for summer because it doesn't absorb sunlight. - Thin and comfortable regular fit T-shirt - Uses Polylain, a blend of merino wool and polyester fibers - Excellent odor resistance, moisture control, and skin feel inherent in the material. 50% polyester, 44% wool, 6% nylon Made in Vietnam [M] Shoulder 42.5 Length 70 Width 54.5 Sleeve 24.5