When its too warm for long sleeves try the mens short sleeve version NRS Mystery Short Sleeve Shirt The warmth of neoprene with a smooth windproof exterior that effectively eliminates evaporative cooling
Material: Neoprene: 1-mm neoprene core traps body heat protecting you from cold water and inclement weather
GlideSkin exterior sheds water, eliminating evaporation's chilling effect for total wind-proof protection
Titanium laminate adhesive retains body heat
ThermalPlush lining keeps you comfortable and dries quickly
Warmth of neoprene with a smooth, windproof exterior effectively eliminates evaporative cooling
Just right for Fall days of Mexicoan rivers
Bought this for a whitewater trip down in Mexico Thanksgiving. I was so glad to have it. Fits great and keeps you warm when the cold fronts come through. Didn't over heat when the sun was out.