Wickability: Draws moisture and perspiration away from the skin transferring it to the next layer retaining a warm layer of air next to the skin.
Low Thermal Conductivity: Means better insulation which keeps you warmer for longer periods.
Quick Drying: Because polypropylene is moisture repellent a wet garment dries quickly.
Hard Wearing: A high resistance to rubbing stretching or tearing.
Lightweight: Polypropylene is only 70% of the weight of an equivalent wool garment.
