Helly Hansen’s Regulate Midlayer Jacket is quite techie and we love it.
The H2 Flow ventilation system allows you to adjust the insulation level – with your own body heat providing an extra layer of comfort.
Designed to be both a stand alone jacket or insulating midlayer, the Regulate has Polartec brushed fleece in the main body with clever air pocket perforations in the back. The Poly shell of outer fabric is what locks heat inside the air pockets.
A great gift for your techie sailor friends. Available on Amazon here.