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Meet the Beneunder Anti-Chafing Outdoor Pants — engineered for hikers, climbers, and explorers who demand freedom of movement. Featuring a 3D dynamic waist-hip system, tapered gusset, and articulated knees, these pants flex naturally with every step. Built with BeatShell weather-resistant fabric and high-stretch fibers, they offer lightweight comfort and reliable protection in diverse outdoor terrains.
Highlights
- 3D dynamic waist-hip expands +5–7cm for all-day comfort
- Tapered gusset & articulated knees allow full range of motion
- BeatShell softshell fabric: windproof, water-resistant & durable
- High-stretch fibers, lightweight at ~490g
- Utility mesh pockets for hands-free convenience
Fabric: 88% Nylon, 12% Spandex – smooth and flexible, offering durability, comfort, and stretch for active movement.
Waistband contrast fabric & lining: 75% Nylon, 25% Spandex – resilient and high-stretch, ensuring a secure yet comfortable fit.
Pocket lining: 100% Polyester – soft, breathable, and easy-care for everyday convenience.
• 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.

Dynamic Waist & Hip Design: Comfort in Motion
The 3D waistband expands +5–7cm as you move, adapting naturally when you run, squat, or sit. Say goodbye to tight waistbands and pinching discomfort — enjoy unrestricted comfort for every outdoor adventure.

Tapered Gusset & Knee Flexibility: Full Range of Motion
A tapered gusset boosts crotch flexibility by +223%, while articulated knees bend up to 160°. From climbing steep trails to everyday walks, the pants move fluidly with your body, never pulling or tearing.

BeatShell Softshell Fabric: Weather-Resistant & Durable
The BeatShell fabric shields against wind, rain, and abrasion with a nano-repellent finish (level 4–5 water resistance). Reinforced fibers withstand 15,000+ abrasion cycles, making it a tough companion for unpredictable outdoor conditions.

High-Stretch Fibers: Lightweight Flexibility
Enhanced with 1.4× stretch spandex, the fabric flexes easily for active movement. Weighing just ~490g, these pants feel light and agile, perfect for autumn and winter adventures.

Utility Pockets: Carry More, Move Freely
Breathable mesh-lined pockets secure essentials like your phone and wallet while releasing excess heat. Travel hands-free and move light without needing a backpack.