The Black Diamond Women's Long Sleeve Rhythm T-Shirt is made with Nuyarn merino wool that's superior to standard merino wool in every way. It dries five times faster, has 35% more stretch, and is stronger per gram. Go for this if you're looking for a highly breathable base layer for high-output activities like trail running.

Features:

• Featuring Nuyarn Wool—a superior merino wool fabric technology that’s lighter, stronger and dries faster than standard merino
• Machine washable
• Certified non-mulesed Australian Merino Wool

Tech Specs:

• Fit: Slim
• Materials: Wool Nylon Blend Single Jersey (57% Nylon, 43% Merino Wool, 95gsm)
• Weight: 104 g