Choose options
Meet the Beneunder Quick-Dry Thermal Base Layer — designed to keep you warm, dry, and comfortable in cold-weather workouts or everyday wear. Powered by HeatApex Core technology, it combines rapid moisture-wicking with heat retention, so sweat never lingers and warmth lasts longer. With four-way stretch and a slim-fit cut, it moves with your body while flattering your shape.
Highlights：
- Dries sweat in 5 seconds, +130% faster than regular thermals
- HeatApex Core raises skin warmth by up to +2°C
- 4-way stretch for freedom of movement
- Slim-fit shaping design for a flattering look
- Antibacterial fabric stays fresh after 150 washes
49.5% Viscose, 45.1% Nylon, 5.4% Spandex – soft, breathable, and flexible, providing lightweight warmth, comfort, and ease of movement for active wear.
• 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
5-Second Quick Dry — No Sweat, No Chill
Uni-Vapor moisture control technology evaporates sweat in just 5 seconds, keeping you dry and fresh even during intense activity. No more sticky discomfort or lingering dampness.
HeatApex Core Warmth — Instant +2°C Boost
The HeatApex Core fiber structure locks in body heat and provides up to +2°C of added warmth. With triple-layer heat retention, it helps you stay comfortable in temperatures from 5°C to 15°C.
4-Way Stretch Comfort — Freedom in Every Move
Made with 4-way stretch fabric, this base layer adapts to your movements and stretches over 200%. Whether you’re running, stretching, or layering up, it moves naturally with your body.
Slim-Fit Tailoring — Warmth with Style
Designed with body-contouring seams, it highlights your waistline and enhances your silhouette. Stay warm without compromising on style.
Antibacterial & Fresh — Effective After 150 Washes
Engineered with AAAAAA-grade antibacterial fabric, it prevents odor-causing bacteria and remains effective even after 150 washes, ensuring long-lasting freshness.