Just enough warmth for chilly days and cool water, yet not too much, the NRS Women's HydroSkin 0. 5mm Long Sleeve Shirt provides an ideal amount of insulation when you're paddling in spring conditions and not quite summer river trips. The 0. 5 millimeter Terraprene neoprene features heat reflective titanium for extra insulation and a water resistant DWR treatment to shed moisture. The ThermalPlush fleece lining is ultra soft for a smooth on skin feel. Four way stretch Powerspan body material allows for unrestricted movement, and spandex underarms make for friction free zones when you're paddling hard.