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- Free Shipping:📦
Shipping Info
- US Warehouse In-stock: 3–4 business days
- 🌍International Shipping (if US out of stock): 7–10 business days
🚲 Bicycle Shipping
Delivery Times:
- Standard: 40–60 business days
- Expedited: 25–30 business days
Shipping Fees:
- Small Bikes: $40 (Standard) | $80 (Expedited)
- Large Bikes: $100 (Standard) | $250 (Expedited)
No extra taxes. Choose the option that works best for you.
We offer a 30-day hassle-free return and exchange policy starting from the date you receive your item. To be eligible, products must be unworn, unused, with tags attached, in original packaging, and accompanied by proof of purchase. If the item is defective, damaged, or incorrect, we cover the return shipping cost; for size or personal preference returns, the customer is responsible for shipping fees. Please inspect your order within 72 hours and contact us for any issues. EU customers have a 14-day no-questions-asked return right. Refunds will be processed within 10 business days after we receive and inspect your return. Please contact customer service before returning items and send returns to the designated address; unauthorized returns will not be accepted. For questions, email service@rockbrosbike.us.
At ROCKBROS, we offer a worry-free 2-year warranty to ensure your satisfaction. Whether it's a defect or product issue, simply reach out to us at service@rockbrosbike.us with your order details. We'll handle the rest to make sure your experience is smooth and hassle-free.

Product FEATURES
Built for racing, training, and hot-weather runs, this ROCKBROS ultralight running singlet combines quick-dry polyester with large airflow mesh zones to release heat and evaporate sweat quickly. The smooth stretch fabric and relaxed athletic cut allow unrestricted arm swings and strides, while bonded seamless edges and a softly brushed interior help reduce rubbing and skin irritation during long-distance running. Weighing approximately 40g for the men’s M and 27g for the women’s S, this breathable running tank top delivers a barely-there feel for race day, marathon training, track workouts, and everyday running.
Product Weight
- Men’s M: Approximately 40g
- Women’s S: Approximately 27g
- Fabric Weight: Approximately 65g/m²
Care Instructions
Hand wash or machine wash in a laundry bag using cold water. Wash promptly after use, do not soak, bleach, dry clean, or use fabric softener. Hang dry and iron at a low temperature.








Built for racing, training, and hot-weather runs, this ROCKBROS ultralight running singlet combines quick-dry polyester with large airflow mesh zones to release heat and evaporate sweat quickly. The smooth stretch fabric and relaxed athletic cut allow unrestricted arm swings and strides, while bonded seamless edges and a softly brushed interior help reduce rubbing and skin irritation during long-distance running. Weighing approximately 40g for the men’s M and 27g for the women’s S, this breathable running tank top delivers a barely-there feel for race day, marathon training, track workouts, and everyday running.
Product Weight
- Men’s M: Approximately 40g
- Women’s S: Approximately 27g
- Fabric Weight: Approximately 65g/m²
Care Instructions
Hand wash or machine wash in a laundry bag using cold water. Wash promptly after use, do not soak, bleach, dry clean, or use fabric softener. Hang dry and iron at a low temperature.










