Fine merino wool responsibly sourced from the grasslands of Patagonia and blended with Capilene® polyester for improved wicking, durability and dry time 18.9 micron-gauge yarn; jersey-knit construction Spandex for added stretch Low-bulk elastic waistband brushed for next-to-skin softness Gusseted crotch for unrestricted movement Inseam shortened by 6" to accommodate boots and reduce binding; slow-washed without chlorine to prevent shrinkage; bluesign® approved fabric 224 g (7.9 oz) Made in Vietnam. SKU: PAT-37181Please note, we can not ship Patagonia outside of the United States.Fabric & Care