Active insulation layer

[USMC2378]

Is it lightweight? I want to say the original Sitka ambient is a 150 weight so looking for something much lighter

How is this outdoors vitals hybrid fleece compared to something like the Peckham USMC Polartec 1/2 zip in terms of comparable warmth does anyone have any experience with both? They weight about the same I believe my Peckham is about 10 oz in a small size and got it for under $10 at a yard sale.

 

[Bearsears]

If you can find the old Kelvin active hoody (the short sleeve one) Its not quite as warm and I can hike in it.