The Montane Women’s Dart Nano Zip T-Shirt will be your go-to base layer for your fastest and lightest missions. Made with supremely lightweight fabric, the technical Dart Nano works hard during high-output activities, enabling you to really go beyond this season - whether you’re taking on an ultra, or pushing personal boundaries in the mountains…If perfectly balancing warmth to weight ratio wasn’t enough, this base layer also comes with some excellent eco credentials too. Made with 100% recycled fabric and finished with POLGEINE permanent odour control means you can wear more, wash less and fully concentrate on going further, faster.