To ensure the Women's Sphere Tank is perfect for summer, Icebreaker blended merino wool with TENCELAR, to create Cool LiteTM. This blend ensures maximum cooling and breathability, while maintaining merino's natural odor resistance. The result is a tank that you can wear for days between washings, and stay cooler and more comfortable in more conditions. Exactly what you want when choosing what to pack for a summer vacation. Weight: 130 Featherweight Fabric: 50% Merino wool, 50% TENCELAR Fit: Regular Layer: First Layers Best for: Outdoor Hiking, Travel Lifestyle Benefits: Lightweight, summer comfort, cooling, odor resistant Features: Icebreaker Cool LiteTM fabric, feminine scoop neck, forward side seams, self fabric inset armhole and neckline trim Care: Machine wash. Dries fast in the shade, but do not tumble dry. Exact instructions on the care label.