When the water is cool but the day is warm, a full wetsuit is overkill and bare skin isn't quite enough. The NRS Men's HydroSkin 0.5 Long-Sleeve Shirt sits comfortably in that gap.

At just 0.5 mm, the Terraprene neoprene is thin enough to wear as a standalone layer over boardshorts on a crisp morning or as a close-fitting base layer under a paddle jacket when conditions call for more. Heat-reflecting titanium built into the neoprene bounces your body heat back to you, adding warmth that punches above the weight of such a thin material. The form fit restricts water entry so the insulation stays effective when you get wet, and the nylon-spandex exterior sheds water quickly while giving you full, unrestricted movement through every stroke.

Comfort against the skin is a priority here. The interior is soft, smooth, and hydrophobic so it never feels cold and clammy the way cheaper neoprene can after a swim. Friction-free seams and a paddler-specific cut mean nothing is binding or chafing through a long day on Canadian lakes and rivers, and rashguard panels under the arms add breathability right where heat builds during active paddling. It layers cleanly with other HydroSkin pieces as part of a complete thermal system.

• Thickness: 0.5 mm Terraprene neoprene
• Heat-reflecting titanium lining
• Nylon-spandex exterior for water shedding and stretch
• Soft, smooth, hydrophobic interior
• Friction-free seams
• Paddler-specific cut
• Rashguard panels under arms for ventilation
• Form fit to restrict water entry