Top Beneunder Deals & Price Drops for January 2026

Designed to tackle extreme winter conditions, this long jacket combines a 280g gas-down lining with a durable 3-layer waterproof, windproof, and breathable shell. It offers superior insulation and protection, making it an ideal choice for subzero temperatures as low as -20°C. Perfect for urban life as well as outdoor adventures like mountain expeditions and polar explorations, its 3-in-1 detachable design provides versatile wearability across multiple seasons, including spring, autumn, and winter. Key Features Ultra-Warm Gas-Down Lining:Filled with 280g of gas-down, this jacket rivals the insulation of 800-fill down, effectively trapping heat and providing exceptional warmth in extreme cold. Tri-Proof Outer Shell:The outer layer is waterproof, windproof, and breathable, offering full protection against harsh winter conditions such as snow, wind, and moisture. 3-in-1 Design:Featuring a detachable inner lining and outer shell, this jacket can be worn in various configurations to adapt to changing temperatures and conditions, offering year-round versatility. Technology Jech Clo+3.0 Gas-Down Technology:Nano hollow fiber technology enhances heat retention by up to 7.5°C, ensuring uniform warmth throughout the body, even in severe cold. Jech LTShell Tri-Proof Shell:Waterproof rating of ≥15000mmH₂O, windproof rating of ≤10mm/s, and breathability rating of ≥10000g/(m²·24h) ensure optimal comfort in extreme weather. Triple-Layer Cold-Resistant Structure:Evenly filled to maintain long-lasting warmth during extended outdoor activities, making it impervious to wet and cold conditions.

Designed to tackle extreme winter conditions, this long jacket combines a 280g gas-down lining with a durable 3-layer waterproof, windproof, and breathable shell. It offers superior insulation and protection, making it an ideal choice for subzero temperatures as low as -20°C. Perfect for urban life as well as outdoor adventures like mountain expeditions and polar explorations, its 3-in-1 detachable design provides versatile wearability across multiple seasons, including spring, autumn, and winter. Key Features Ultra-Warm Gas-Down Lining:Filled with 280g of gas-down, this jacket rivals the insulation of 800-fill down, effectively trapping heat and providing exceptional warmth in extreme cold. Tri-Proof Outer Shell:The outer layer is waterproof, windproof, and breathable, offering full protection against harsh winter conditions such as snow, wind, and moisture. 3-in-1 Design:Featuring a detachable inner lining and outer shell, this jacket can be worn in various configurations to adapt to changing temperatures and conditions, offering year-round versatility. Technology Jech Clo+3.0 Gas-Down Technology:Nano hollow fiber technology enhances heat retention by up to 7.5°C, ensuring uniform warmth throughout the body, even in severe cold. Jech LTShell Tri-Proof Shell:Waterproof rating of ≥15000mmH₂O, windproof rating of ≤10mm/s, and breathability rating of ≥10000g/(m²·24h) ensure optimal comfort in extreme weather. Triple-Layer Cold-Resistant Structure:Evenly filled to maintain long-lasting warmth during extended outdoor activities, making it impervious to wet and cold conditions.

This lightweight Air Down Jacket is crafted with Beneunder’s proprietary Jech LTShell tri-proof hard shell and the innovative Jech Clo+ Air Down 3.0 liner. It offers superior protection against dirt, wind, and water, while the air-insulating liner ensures warmth without bulk. The detachable 3-in-1 design adapts effortlessly to temperature changes ranging from 0°C to 25°C, making it the perfect companion for unpredictable weather conditions. Product Highlights High-Warmth Air Down: Featuring air down combined with a fleece-lined interior, this A-line short jacket offers lightweight warmth without the bulk. Detachable 3-in-1: Versatile for all seasons, it shields you from autumn rain and cold winds. Wear the shell alone for wind and water resistance (15-25°C), the liner alone for lightweight warmth (5-15°C), or combine them for waterproof warmth (0-10°C). Outdoor Protection: The Jech LTShell tri-proof hard shell features a three-layer construction with fully sealed seams. It offers wind resistance ≤10mm/s, waterproofing ≥15000mmH2O, durability with abrasion resistance ≥15000 cycles, breathability ≥10000g/(㎡·24h), and stain resistance ≥Grade 4. Heat-Retaining Warmth: The Jech Clo+ 3.0 air down liner is designed with multi-layer air pockets, delivering a +3.6°C boost through far-infrared heat and an additional +7.5°C from light-retentive warmth, with a thermal insulation value of 2.2Clo. Easy Maintenance: The anti-static liner ensures comfortable wear and remains warm even after 20 machine washes. Product Technology Rapid-Dry: Quick-drying technology keeps the inner layers dry and comfortable. Anti-Burden: Reduces the burden of wearing, enhancing overall comfort. Anti-Sweet: Sweat-resistant technology keeps the skin dry and fresh.