weatherresistant materials block wind and rain without restricting movement

Meet the Beneunder 4-in-1 Outdoor Shell Jacket engineered for extreme versatility, waterproof protection, and all-weather warmth. Built with Jech LTShell fabric, it delivers 20,000mmHO waterproofing, 12,100g/m24h breathability, and abrasion resistance over 18,000 cycles. Inside, the AirBloom 4.0 thermal liner provides 7.5C warmth boost and locks heat as efficiently as 800-fill down, while resisting moisture and clumping. With its detachable 4-in-1 design, you can adapt from -10C to 25C, whether hiking in rain, snow, or sunshine.

Highlights

• Jech LTShell fabric: 20,000mmHO waterproof / 12,100g breathability / 18,000 abrasion cycles
• AirBloom 4.0 insulation: 7.5C warmth, outperforms 800-fill down in wet cold
• Four-in-one detachable system: wear outer shell, liner, or both for -10C to 25C
• Windproof, oil-repellent, stain-resistant (grade 4-5), with anti-static liner
• Functional details: adjustable hood, drawcord hem, Velcro cuffs, machine washable

Electrospun nanofiber membrane blocks microscopic particles