The New Synthetic Alternative to Down
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.
Shop Women's Thermoball
Shop Men's Thermoball
- Phenomenal warmth in cold and wet conditions
- Packs neatly into zipper pocket (not all styles)
- Insulates even when wet