Light Even When Wet. Now in Vortex.
Built on the upgraded QiFlow V5.0 platform,
the Vortex edition combines our latest fabric innovation with signature visual identity.
Engineered for racing conditions — ultralight, fast-drying, and breathable under pressure
Enhanced Ventilation Through QiFlow V5.0
The upgraded back panel features a refined Qiflow mesh structure.
Compared to traditional grid fabrics, airflow is increased by up to 60%, enabling faster heat dissipation during high-intensity efforts.
Features
High-density ventilation mesh on back panel
Improved airflow and heat release
Reduced heat buildup during racing
Ultralight. Fast Drying. Race Ready.
Designed to minimize weight without compromising performance.
At approximately 34g (Men M) — about the weight of a single energy gel — the singlet reduces running burden over long distances.
Moisture spreads rapidly across the fabric surface, allowing sweat to evaporate quickly and reducing cling during effort.
Features
Approx. 34g (Men M, dry condition)
Rapid sweat diffusion (sub-1s spread test)
Reduced cling during heavy sweating
Cooler, drier running experience
Optimized for race-day performance
Stay Fresh After Every Run
Treated with SILVADUR™ antimicrobial technology,
the fabric helps maintain freshness even after extended efforts.
Features
5A-level antibacterial performance
Odor control during and after runs
Long-lasting freshness
Refined Details for Race Performance
Every detail is built with real running feedback.
Features
“Zero-feel” bonded construction to reduce friction
Split hem design for unrestricted stride
Tag-free labeling for irritation-free wear
Reflective logo for low-light visibility
- Machine wash cold (30° max)
- Do not bleach
- Iron low heat on the reverse side
- No dry-cleaning
- Do not tumble Dry
📦 RETURNS (LOCAL ONLY)
Not the right fit? We don’t do exchanges online, but you can return your item for an online store credit refund* (except nutrition and consumables).
For international returns, please refer to our Shipping & Returns page for more info.
📍 LOCAL SHIPPING - EXPRESS
Only applies to orders placed before 8:30am (GMT+8) from Monday to Friday. Orders placed over the weekend or on public holidays will be processed on the next working day.
Orders are fulfilled by DHL Express and are delivered by next 1-2 business days.
📍 LOCAL SHIPPING - STANDARD
Free shipping for orders above S$100. Orders placed before 8:30am (GMT+8) from Monday to Friday are shipped on the same day*.
Orders are fulfilled by SPX Express and are delivered within 3-5 days.
*Same-day dispatch is not guaranteed during sale periods or high order volumes, but we’ll always do our best to get your order out quickly.
🌍 INTERNATIONAL SHIPPING (FedEx / DHL)
International rates apply. Orders are fulfilled and delivered in 5-10 days.
📝 INTERNATIONAL CUSTOM AND/OR DUTIES
Customs taxes and/or import duties are imposed by the destination country and is not included in the checkout/shipping price. Actual amount varies according to local custom's terms & conditions.
Please contact your local customs office to find out more information on the charges before you place an order.
Running Lab is not liable for any additional customs charges, duties or taxes arising from your order or delivery.
Please refer to our Shipping & Returns page for more info.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Shop now, pay later. 3 interest-free payments with Atome.

