The Aire women&&';;s long sleeve shirt features a naturally soft, lightweight and moisture-wicking blend of our sustainable alpaca fiber and tencel from eucalyptus. The result is a liquid-feeling, form-fitting layer for everything that requires a little extra comfort and flexibility, from hiking to traveling. (Model is 5&';8 and wearing an X-Small) Why you&';ll love this Softest long sleeve shirt you&&';;ll ever own Moisture wicking and odor resistant Flexible and naturally thermoregulating For Hiking, Climbing, Camping, Travel Material 85% Tencel / 15% Royal Alpaca Fit & Feel Slim / Long Classic Wash & Care Instructions -Machine wash cold with like colors on gentle. Use only non-chlorine bleach when needed. Do not dry clean. -Tumble dry, cool iron if needed