







ROCKBROS DARWIN I 12” Kids Balance Sport Bike
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Shipping Fees:
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
- US Warehouse In-stock: 3–4 business days
- 🌍International Shipping (if US out of stock): 7–10 business days
- 🚲Bicycles: 20–25 business days
Please note that we do not charge any additional taxes.
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 1-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 Highlights
FEATURES

DARWIN I 12” Kids Balance Sport Bike
There’s nothing like the thrill of a first bike ride.
With the DARWIN I, kids build confidence and balance at a safe, fun pace—perfect for young adventurers!


ROCKBROS DARWIN I
Let’s start the adventure!
Forget the old-school training wheels and tricycles. There's a smarter way to ride!

Aluminum Riser Handlebar
Aluminum Riser Handlebar is lightweight and durable, designed to improve comfort with an upright riding position. Ideal for better control and reduced strain on your back and wrists. Perfect for various cycling styles.

Aluminum Frame
Sturdy and durable material, these balancing bikes for kids are designed with a heavy-duty aluminum frame that’s easier to manage and supports growing riders.

Ergonomic Saddle Seat
Ergonomic Saddle is specially designed for young children, providing a soft and comfy seat for their little rides. Its gentle shape helps keep them comfortable, making cycling fun and easy without discomfort. Perfect for toddlers and young riders.

Puncture-Resistant Tires
Puncture-Resistant Tires (A/V) are designed to provide durability and reliability. Their puncture-resistant feature helps prevent flats, ensuring a smoother and more hassle-free ride. Ideal for kids' bikes or smaller vehicles, they offer extra protection and lasting performance.
Product Description
Specification | Details |
---|---|
Weight | 6.2 lbs |
Frame | Aluminum |
Fork | Aluminum, Rigid |
Wheels | 12″ Aluminum |
Tires | 12″ x 1.75″ Puncture-Resistant (A/V) |
Handlebar | 16″ x 15.7″ Aluminum Riser |
Stem | Forged Aluminum |
Seat | Ergonomic Saddle |
Seatpost | Steel |
Hubs | Aluminum Bearings |
Spokes | 14G Carbon Steel with Brass Nipples |
Grip | Soft rubber for better comfort and control |
Geometry | Low standover height |
Intended Use | toddlers and young kids (1-4 years old) |