Ridge Merino Wool Women's Ridge Boy Short Natural, sustainable and biodegradable Merino Wool 180g, 84% Merino Wool, 12% Nylon, 4% Spandex Flatlocked seams, printed label and removable care label for max comfort New No-flip waistband - UPDATED 6/2017 Moisture management  Ridge natural fibers wick moisture away from your skin to prevent clamminess. No stink  Merino wool naturally and permanently resists odor without the use of chemicals. Soft: no itch, premium ultra-fine 18.5-micron fibers feel great against your skin Climate control: Natural temperature regulation means Ridge insulates when its cold and lets heat escape when temperatures rise Moisture management: Ridge natural fibers wick moisture away from your skin to prevent clamminess No stink: Merino wool naturally and permanently resists odor without the use of chemicals Sun Protection: UPF 50+ certified