Micro weight gives you a feather-light option. Micro is ideal as your base layer, underwear, or on its own when the temps heat up. Merino’s moisture-wicking properties keep you cool when you’re on the move. Core Spun yarn provides extra durability while still offering merino's super soft, insulative, and moisture wicking properties next to the skin. Nylon inner core offers strength, elasticity, resiliency, and durability. Merino Wool outer sheath provides insulation, moisture wicking, and UV protection. Lightweight all-season base-layer or stand alone tank. Naturally moisture-wicking and odor resistant. Soft, washable, anti-itch wool.