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We provide clear and detailed shipping fees based on the order amount and shipping method:
- Standard Shipping:
- Order Amount Below $29: Shipping Fee - $4.99
- Delivery Time: 3-4 business days
- Free Shipping:
- Order Amount $29 and over: Free 📦
Shipping Info
🚲 Bicycle Shipping
Delivery Times:
Shipping Fees:
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.

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
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
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.








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