High-performance, breathable base layer that’s 30% lighter than the Dart t-shirt The Dart Nano short‑sleeved baselayer is a lightweight, high‑performance T‑shirt designed for exceptional moisture control during high‑output activity. Made from 100% recycled APEX Lite fabric, it delivers an optimal balance of breathability, fast‑drying performance, and next‑to‑skin comfort. Finished with POLYGIENE® permanent odour control, it stays fresher for longer, making it an ideal choice for warm conditions and intense days in the mountains.