Outdoor Research Women's Size Chart Using 83% merino wool with a touch of nylon and spandex for extra mobility, the Alpine Onset V-neck features a trim fit as your next-to-skin layer for easy layering and efficient temperature control. A flat seam construction prevents chafing, and a lightweight, compact design makes it easy to fit an extra layer or two in your pack. Plus, merino wool naturally blocks odors - making it an easy winner that both you and your tentmate will appreciate. Features: - Quick-Drying - Wicking - Breathable - Lightweight - Mulesing-Free - Anti-Odor - Contrast Stitching - V-Neck - Raglan Sleeves - Flat Seam Construction - Fabric: 83% merino wool 12% nylon 5% spandex - Center Back Length: 26 3/4" / 68cm - Weight: 6.28oz / 178g Avg weight for size M - Model images are shown in an alternate color