The Montane Men’s Dart Nano T-Shirt is 30% lighter than the best-selling Dart T-Shirt and has been engineered to deliver impressive breathability when moving at pace in the mountains. APEX LITE 100% recycled polyester fabric creates an ultralight base layer that is highly efficient at moving moisture away from your skin, to keep you comfortable during long days on the trail. POLYGIENE® permanent odour control enhances the fabric and provides freshness that goes the distance. The Montane Men’s Dart Nano T-Shirt is the only choice when you need the lightest possible base layer to smash a PB, or push your limits in extreme mountain environments.