GlacierZip – Women’s Warmth Half-Zip Fleece Base Layer

Meet the Beneunder Half-Zip Fleece Base Layer — engineered for versatile warmth, stretch, and everyday comfort. Available in two warmth levels, it adapts to different climates and layering needs. Crafted with double-brushed fleece, it provides a soft, breathable feel while boosting insulation and heat retention. With 360° stretch and moisture-wicking fibers, it moves with your body and keeps you fresh on the trail or in town. Lightweight and slim-fit, it’s perfect as a standalone top or a layering essential.

• Mid Warmth (5°C–15°C): Retains heat by 37.8%, with a +2.1°C warmth boost. Weighs ~225g, slim and lightweight for mild-cold weather.
• High Warmth (-5°C–5°C): Retains heat by 44.1%, with a +3.9°C warmth boost. Weighs ~250g, denser fleece for colder conditions.

Highlights:

• Double-brushed fleece traps heat for a +2.1°C to +3.9°C warmth boost
• Hollow-core fibers enhance insulation: 37.8% (Mid Warmth) | 44.1% (High Warmth)
• 360° stretch with 244% expansion — unrestricted movement
• Moisture-wicking fibers absorb instantly (521% absorption, 279.6mm/s breathability)
• Lightweight & slim fit: ~225g Mid Warmth / ~250g High Warmth