Here's a polished product description and key features list for your UK eCommerce website:

The Dart T-Shirt is a versatile technical layer designed for year-round performance across a wide range of mountain and outdoor activities. Made from 100% recycled APEX ECO fabric, it delivers the ideal balance of lightweight warmth, effective moisture management, and breathable comfort to keep you performing at your best.

Engineered for active use, the fabric efficiently wicks moisture away from the skin while maintaining comfort throughout changing conditions. POLYGIENE® permanent odour control helps keep the T-shirt fresher for longer, making it an excellent choice for multi-day adventures and repeated wear.

Choose the Dart T-Shirt for reliable comfort on every adventure.

Key Features:

• Made from 100% recycled APEX ECO fabric

• Lightweight warmth for all-season performance

• Highly breathable construction for lasting comfort

• Excellent moisture-wicking properties

• POLYGIENE® permanent odour control technology

• Helps maintain freshness during multi-day use

• Suitable for mountain activities and everyday outdoor adventures

• Comfortable technical design for year-round wear