In the shifting climates of mountains and rainforests, true protection is proven only in the field.
The Simmerui Field Team conducted a 48-hour outdoor test of this all-weather protective jacket at an altitude of 2,100 meters, under conditions of rain, strong wind, and cold.
1. Test Conditions
Temperatures ranged from 3°C to 9°C with intermittent heavy rainfall.
Throughout the test, the jacket maintained a completely dry interior—its waterproof rating >10,000 mmH₂O and moisture permeability >15,000 g/m²·h (JIS).
Even under continuous downpour, water beaded and slid off the surface while body temperature remained stable.
2. Construction & Craftsmanship
The jacket’s seam-sealed waterproof construction underwent 86 precision manufacturing steps.
All seams remained flat and intact after extended movement, ensuring no leakage or discomfort.
Its tri-shield outer fabric—windproof, waterproof, and dust-resistant—provided comprehensive protection during high winds up to 45 km/h.
3. Comfort & Mobility
The 3D ergonomic cut was designed specifically for Asian body shapes, allowing natural movement during climbing, crouching, or walking.
The soft inner lining minimized friction and delivered long-term comfort.
4. Material Science
The jacket integrates a multi-layer thermal and moisture management system:
Outer windproof layer blocks cold air;
Middle waterproof-breathable membrane expels heat and vapor;
Inner lining enhances dryness and comfort.
Lab simulations showed a stable 4°C thermal balance between internal and external temperatures during active wear.
5. Durability
After multiple rounds of optimized design, the jacket’s durability was verified through abrasion, washing, and field exposure tests.
Seam taping and waterproof membranes maintained full performance integrity.
6. Field Conclusion
From rain-drenched climbs to cold-night trekking, the jacket stood resilient:
“Shield against the wind. Armor against the rain. Breathable as your second skin.”
It is not only an outdoor jacket—but a trusted partner between science and the wild.