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Meet the Beneunder AirBloom 3.0 Lightweight Vest — designed as a versatile mid-layer for outdoor comfort. With advanced three-layer insulation, it locks in warmth equivalent to 800-fill down but stays slim, lightweight, and moisture-resistant. Perfect for layering under a shell or wearing on its own, it keeps you comfortable in temperatures from 5°C to 15°C.
Highlights:
- Advanced AirBloom 3.0 insulation equals 800-fill down performance
- +6°C warmth boost with tested thermal retention
- Moisture-resistant fibers, won’t clump in rain
- Featherlight at ~175g and only 0.6cm thin
- Antibacterial & odor-resistant for long-term freshness
Fabric: 100% Nylon – durable and weather-resistant, providing lightweight protection and a sleek look.
Lining & pocket lining: 100% Polyester – soft, breathable, and easy-care for lasting comfort.
Filling: 100% Polyester – lightweight insulation that delivers steady warmth without bulk.
• Free Shipping on all orders.
• 30-day Return: Feel free to send your item back within 30 days of receiving the product.
You can review our shipping and returns policy here.
Based on moderate activity with a basic inner layer; increase warmth for wind or humidity.
Recommended range: 5–15°C / 41–59°F

Triple-Layer Insulation — As Warm as 800-Fill Down
With three layers (heat-storage, insulation, and warming), the vest provides a warmth boost of up to +6°C. Tested to outperform 800-fill down in thermal retention while staying slim and breathable.

Moisture-Resistant Warmth — No Clumping, No Chill
AirBloom fibers resist moisture and prevent clumping, keeping warmth stable even in damp, rainy weather. Unlike down, it stays fluffy and effective after exposure.

Featherlight & Slim — Warmth Without Bulk
Weighing only ~175g and just 0.6cm thin, this vest keeps your arms free for movement. Designed for outdoor hiking, jogging, or layering under a shell, it delivers warmth without weight.

Antibacterial & Odor Control — Fresh All Day
Built-in antibacterial treatment prevents odor buildup, making it ideal for extended wear during hiking or daily layering.

Easy Care — Durable & Machine Washable
Unlike down, AirBloom insulation is machine washable and maintains its shape and warmth after wash. Designed for hassle-free outdoor use.