Women's Merino Long-T - MStay natural, stay ready. The Merino Long T looks like a regular long sleeve T Shirt, but actually works so much harder. Technology Made of strong(er) stuff: Using special spinning technology, we're able to spin a fine polyamide yarn around the merino. This makes the fabric more durable and abrasion resistant, while keeping weight down. So no matter what adventure you have in store, this top can take it, without weighing you down. Materials Undeniably