Icebreaker Anatomica Tank Merino base layer (XL, white/grey) - The Icebreaker Anatomica Tank is extremely versatile! The functional undershirt is super soft, moisture-wicking, breathable and odour-resistant. Thanks to the amazing characteristics of merino wool, this base layer is a great option for both outdoor sports and everyday wear. What's great about the Anatomica Tank is that it will keep you cool when it's hot and wick away moisture when worn under a hard shell or softshell jacket. Plus, Icebreaker has reduced the amount of seams on the Anatomica Tank, and the very few that there are are flat so that you can wear a backpack without any chafing or discomfort.