WOOLPOWER 400 Full-Zip Merino Sweater
Woolpower 400 full-zip sweater is a high-insulation Ullfrotté Original merino terry midlayer with fast venting via full zipper, keeping you warm and dry in cold, damp environments.
WOOLPOWER 400 Full-Zip Merino Sweater is a midlayer you can build winter systems around. Made from Ullfrotté Original merino terry, it combines a tough, smooth outer face with a heat-storing looped interior — reliable warmth whether moving or static.
The full-length zipper lets you dump heat fast during high output and seal it in when conditions turn rough. 400 class works as a powerful midlayer under a shell or as an outer layer in milder winter weather.
Technical Specifications:
- Series: Woolpower 400
- Fabric: Ullfrotté Original merino terry
- Build: smooth outside, looped inside
- Closure: full-zip front
Key Features:
- Very warm, field-durable midlayer
- Quick ventilation control via zipper
- Moisture transport and warmth when wet
- Midlayer or stand-alone winter sweater
Woolpower 400 — the heat engine of your layering system.