Smartwool WOmen's Merino 150 Base Layer Micro Stripe Short Sleeve T-shirt 87% merino wool/13% nylon Core Spun technology wraps merino wool around a nylon core for durability while maintaining the temperature regulation and moisture management of wool next to your skin Raglan sleeve design moves shoulder seams for comfort under pack straps Smooth merrow stitching wraps from side to front for comfort and a flattering feminine aesthetic Slim fit Size Small In pre-owned very good condition.