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Step into the N99 protection era with Beneunder’s outdoor underwear. Designed with medical-grade sterilization, sweat-control fabric, and seamless stretch fit, it keeps you fresh, hygienic, and confident—whether hiking, traveling, or facing daily commutes.
Highlights：
- N99 Sterilization Protection
- Dual-Clear Sweat Control
- 7A Antibacterial Protection
- Seamless Stretch Fit
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Travel-Ready Packaging
Fabric: 100% Nylon – lightweight, smooth, and breathable for everyday comfort.
Gusset lining: 100% Cotton – soft, gentle, and naturally breathable for added freshness and care.
• 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.
N99 Sterilization Protection
Medical-grade EO sterilization with ≥99% bacteria removal, vacuum-sealed for zero contamination.
Dual-Clear Sweat Control
Specialized fibers absorb and dry sweat in 6 seconds, preventing bacteria growth and keeping skin fresh even in humid environments.
7A Antibacterial Protection
7A-grade antibacterial technology, effective after 150 washes, inhibits 99% of E. coli & Staphylococcus.
Seamless Stretch Fit
200% enhanced elasticity, 20% extra hip room, seamless sides for chafe-free, stay-put comfort.
Warmth Without Overheating: 341.3 mm/s Breathability
Highly breathable fabric (341.3 mm/s) keeps air flowing so you stay warm without feeling stuffy.