Multi-purpose - you can wear it alone or over lightweight base layers.
Total windproof protection. 1-mm neoprene with GlideSkin exterior sheds water to eliminate the chilling effect of evaporation. TiCoat traps your body heat. With ThermalPlush lining throughout you can wear it alone or over lightweight base layers. When a HydroSkin shirt isn't quite enough consider the Mystery.
Buy the NRS Mystery Long Sleeve Shirt (Spring 2006) at Altrec.com. Orders over $45 qualify for free shipping.