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Meet the Beneunder 3D Flex Outdoor Pants — built for protection, stretch, and all-day comfort. Featuring a dynamic waistband that expands with movement, four-way stretch fabric, and water-resistant durability, these pants keep you comfortable from city commutes to rugged trails. Lightweight at just 510g, they balance style, function, and outdoor resilience.
Highlights:
- 3D Dynamic Waist expands with posture changes, no pinching
- Four-way stretch fabric for free movement
- Wind- and water-resistant, durable to 18,000+ rubs
- Lightweight build, only ~510g
- Slim-cut design, versatile for outdoor and daily wear
Fabric & pocket lining 1: 87% Nylon, 13% Spandex – durable, water-repellent, and flexible for comfortable movement and outdoor protection.
Lining & pocket lining 2: 100% Polyester – soft, breathable, and easy-care, providing warmth and everyday comfort.
• 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
3D Dynamic Waistband — No Pinching, No Pressure
The waistband expands up to 11cm in the front and 3.5cm at the sides, adapting as you sit or move. No need for constant adjusting — it flexes with your body for a secure yet relaxed fit.
Four-Way Stretch — Full-Range Freedom
Made with Flex Fibre fabric, the pants offer 42% horizontal and 97% vertical stretch. Whether climbing, squatting, or taking long strides, the fabric stretches effortlessly without losing shape.
Wind & Water Resistant — Built for the Outdoors
The fabric blocks wind and light rain, with water resistance rated at 4–5 and windproof at 17.5mm/s. Durable to 18,000+ rubs, it withstands rugged trails and daily wear with ease.
Lightweight & Durable — Comfort on the Go
At just ~510g, these pants are light enough for all-day wear yet tough enough for outdoor challenges. Perfect balance between protection and mobility.
Slim-Cut Style — Versatile for Daily & Outdoor Looks
Tailored with a straight-leg cut and slimming front pleats, the design offers a clean, flattering look. Easy to style for outdoor gear or everyday outfits.