The North Face™ developed a partnership with Primaloft® to offer a new synthetic alternative to down. Thermoball™ is a revolution in insulation technology. Unlike traditional, continuous-filament synthetic insulations, the small round Primaloft synthetic fiber clusters closely to mimic down clusters; trapping heat within small air pockets to retain warmth.
ThermoBall™ Technology offers the low weight, loft, warmth, and compressibility of down with the wet-weather insulating performance of a synthetic.
DISCOVER THE WHOLE THERMOBALL™ RANGE
MEN’S SELECTION
WOMEN’S SELECTION
Thermoball
Stays warm
even when wet
ThermoBall™ is an ultralight, highly compressible synthetic
insulation that retains loft and traps heat even when wet.

-
ThermoBall™ fibers
-
Goose down
Packs down to a pocket size.
ThermoBall™ packs incredibly small, right into its own pocket.
Packs down to a pocket size.
ThermoBall™ packs incredibly small, right into its own pocket. You have to see it to believe it.