1. Important Safety Information
Your ROCKBROS Kids Full-Face Bicycle Helmet is designed to provide protection during cycling activities. Adherence to these safety guidelines is crucial for ensuring the user's safety.
- CE Certification: This helmet is CE certified, meeting European safety standards for bicycle helmets.
- Proper Fit: A helmet can only provide maximum protection if it fits correctly and is securely fastened. Ensure the helmet is snug and does not move freely on the head.
- Impact Protection: The helmet features a high-density PC (Polycarbonate) outer shell and an impact-absorbing EPS (Expanded Polystyrene) foam inner layer to protect against impacts.
- Replacement After Impact: A helmet that has sustained an impact, even if no damage is visible, must be replaced immediately. Its protective capacity may be compromised.
- Intended Use: This helmet is suitable for outdoor activities such as cycling, mountain biking (MTB), BMX, scootering, and skateboarding. It is not intended for motor vehicle use.
- Chin Guard: The removable chin guard offers additional facial protection for competitive sports or higher-risk activities.
2. Product Overview
The ROCKBROS Kids Full-Face Bicycle Helmet offers versatile protection and comfort for young riders.
Key Features:
- Durable Construction: High-quality PC shell and EPS foam for robust impact absorption.
- Removable Chin Guard: Allows conversion between a full-face helmet for enhanced protection and a half-helmet for leisure activities.
- Adjustable Visor: Provides protection from sun and debris.
- Breathable Design: Multiple air vents and sweat-wicking inner pads ensure comfort during use.
- Insect Net: Integrated mesh on the inner cushion prevents insects and gravel from entering.

Image: The helmet features a removable chin guard, allowing for two wearing styles: full-face for competitive sports and half-helmet for leisure activities.

Image: Internal structure highlighting the high-density PC shell and impact-absorbing EPS foam for superior protection.

Image: Comfort and breathability features, including soft inner pads, sweat-wicking mesh, and 16 large air permeability holes.
3. Sizing and Fit
A correctly sized and fitted helmet is essential for safety. Follow these steps to ensure a proper fit.
3.1. Measuring Head Circumference
Use a soft measuring tape to measure around the widest part of the head, approximately 1 inch (2.5 cm) above the eyebrows and around the back of the head. Compare this measurement to the size chart below.

Image: Detailed size chart and visual guide on how to measure head circumference for the correct helmet size.
3.2. Size Chart
| Size | Head Circumference (cm) |
|---|---|
| S | 48-54cm |
| M | 54-58cm |
Note: The helmet's circumference is adjustable within these ranges.
3.3. Adjusting the Fit
The helmet features a 360° adjustment knob at the back to fine-tune the fit. Turn the knob clockwise to tighten and counter-clockwise to loosen until the helmet feels snug and secure without being uncomfortable.

Image: The 360° adjustment knob at the rear allows for precise fitting, accommodating various head sizes within the specified range.
4. Assembly and Adjustment
4.1. Attaching/Detaching the Chin Guard
The chin guard is removable, allowing the helmet to be used in full-face or half-helmet configurations. To attach, align the connectors on the chin guard with the corresponding slots on the helmet and press firmly until they click into place. To detach, press the release buttons (if present) or pull firmly but carefully to disengage the connectors.
4.2. Adjusting the Visor
The visor can be adjusted to provide optimal eye protection from sun, rain, and debris. Gently push or pull the visor to the desired position. The widened design helps protect the user's eyes effectively.

Image: The widened adjustable brim provides enhanced protection for the eyes.
4.3. Strap Adjustment
Adjust the side straps so that they form a 'V' shape just below the ears. The chin strap should be tightened so that it is snug against the throat, allowing only one or two fingers to fit comfortably between the strap and the chin. Ensure the buckle is securely fastened.
5. Care and Maintenance
Proper care extends the life of your helmet and maintains its protective qualities.
- Cleaning the Helmet: Clean the helmet shell with a soft cloth, mild soap, and water. Avoid harsh chemicals, solvents, or abrasive cleaners, as these can damage the helmet's materials and compromise its integrity.
- Cleaning Inner Pads: The inner pads are removable for cleaning. Hand wash them with mild soap and water, then air dry completely before reinserting them into the helmet.
- Storage: Store the helmet in a cool, dry place away from direct sunlight and extreme temperatures. Avoid storing it near heat sources or chemicals.
- Inspection: Regularly inspect the helmet for any signs of damage, such as cracks in the shell, dents in the foam, or frayed straps. If any damage is found, replace the helmet immediately.
6. Troubleshooting
If you encounter any issues with your helmet, consider the following:
- Helmet feels loose: Re-measure head circumference and adjust the rear knob and chin straps for a snug fit. Ensure the helmet does not rock back and forth or side to side.
- Discomfort: Check for proper pad placement. Ensure straps are not twisted or too tight. If discomfort persists, the helmet size might be incorrect.
- Chin guard difficult to attach/detach: Ensure proper alignment of connectors. Do not force. If issues persist, inspect for any obstructions or damage to the connectors.
7. Specifications
| Feature | Detail |
|---|---|
| Brand | ROCKBROS |
| Model Name | 10110061005/RBB |
| Color (Current Variant) | Argento (Silver) |
| Age Range | Child |
| Sizes Available | S (48-54cm), M (54-58cm) |
| Outer Material | Polycarbonate (PC) |
| Inner Material | Expanded Polystyrene (EPS) |
| Special Feature | Breathable, Removable Chin Guard |
| Item Weight | 425 Grams |
| Recommended Uses | Cycling, Mountain Biking, BMX, Scootering, Skateboarding |
8. Warranty and Support
For warranty information, product support, or any inquiries not covered in this manual, please contact ROCKBROS customer service or the retailer from whom you purchased the helmet. Keep your proof of purchase for warranty claims.