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 20,000mmH₂O waterproofing, 12,100g/m²·24h breathability, and abrasion resistance over 18,000 cycles. Inside, the AirBloom 4.0 thermal liner provides +7.5°C 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 -10°C to 25°C, whether hiking in rain, snow, or sunshine. Highlights Jech LTShell fabric: 20,000mmH₂O waterproof / 12,100g breathability / ≥18,000 abrasion cycles AirBloom 4.0 insulation: +7.5°C warmth, outperforms 800-fill down in wet cold Four-in-one detachable system: wear outer shell, liner, or both for -10°C to 25°C Windproof, oil-repellent, stain-resistant (grade 4-5), with anti-static liner Functional details: adjustable hood, drawcord hem, Velcro cuffs, machine washable
