Core – Women's Thermal Base Layer INS ACC The Beneunder Oversized Foldable Sunglasses

The Beneunder Oversized Foldable Sunglasses is a lightweight

Hollow-core fibers enhance insulation: 37

or outdoor training

Designed for medium-intensity activities in cooler seasons

Core – Women's Thermal Base Layer INS ACC The Beneunder Oversized Foldable SunglassesMeet the Beneunder Thermal Base Layer Series designed for cold weather adventures and cozy everyday warmth. Engineered with dual tech fabrics, this series balances heat retention, moisture control, and skin friendly comfort. The Heat Lock line features moisture activated thermofibers that warm up by up to 8 C. The Amino Skin line infuses amino acids and silk protein to hydrate skin and reduce winter dryness and static. Highlights Moisture Heating