An all-season favorite, the Women&';s Classic All-Season Merino Base Layer Long Sleeve can be sported as a base layer in the fall or summer when it&';s time to go backpacking. This base layer features Core Spun technology-which is Merino wrapped around a nylon core for added durability while still keeping the comfort of ultra-soft, responsibly sourced Merino next to skin. Our Raglan sleeves eliminate shoulder seams for perfect comfort under a pack, and smooth merrow stitching wraps from side to front to keep you looking as good as you feel. Fit: Slim Our slim fit is intended to follow the contours of the body Our lightweight Merino jersey fabric uses a recycled nylon core to increase durability while still keeping 100% Merino wool next to skin Merrow stretch stitching designed to elevate comfort, range of motion, and fit Side seams wrap to front for body-enhancing fit Raglan sleeve design eliminates need for shoulder seams Made in China: 88% Merino Wool, 12% Nylon. Exclusive of Decoration.