1. Introduction
Thank you for choosing the Nania START I FIX i-Size car seat booster. This manual provides essential information for the correct installation, use, and maintenance of your car seat. Please read these instructions carefully before use and keep them in a safe place for future reference. This car seat is designed for children with a height between 106 cm and 140 cm (approximately 5 to 10 years old) and is approved according to the R129 i-Size standard.
2. Safety Information
- Always ensure the car seat is correctly installed and secured in the vehicle before placing a child in it.
- The child must always be secured with the vehicle's 3-point seat belt.
- This car seat is designed for forward-facing use only.
- Never leave a child unattended in the car seat.
- Do not use the car seat if it has been involved in an accident, even if there is no visible damage. Internal damage may compromise its safety.
- Regularly check all parts for wear or damage. Replace immediately if any damage is found.
- Ensure the vehicle's seat belt is not twisted and is correctly routed through all designated guides.
3. Product Overview and Features
The Nania START I FIX car seat booster offers enhanced safety and comfort for your child. Key features include:
- i-Size R129 Approval: Complies with the latest European safety standards.
- Isofix Fixations: Provides a secure and stable connection to your vehicle's Isofix anchor points.
- Adjustable Headrest: The headrest can be adjusted in height to accommodate your child's growth, featuring memory foam for added comfort.
- Reclinable Base: Allows for a single recline position for increased comfort during travel.
- Side Protection: Integrated side impact protection for enhanced safety.
- Comfortable Seating: Designed with comfortable seat and cushion padding.
- Removable and Washable Cover: The fabric cover can be removed and washed by hand at 30°C for easy maintenance.

Figure 3.1: Front view of the Nania START I FIX car seat booster.

Figure 3.2: Angled view of the Nania START I FIX car seat booster.

Figure 3.3: Side view of the Nania START I FIX car seat booster.
4. Installation and Setup
4.1. Adjusting the Headrest
The headrest can be adjusted to ensure optimal comfort and safety for your child. To adjust, locate the adjustment mechanism (usually a lever or button) at the back or top of the headrest. Press the mechanism and slide the headrest up or down until it is at the correct height, ensuring the shoulder belt guide is just above your child's shoulders.

Figure 4.1: Adjusting the headrest height.
4.2. Reclining the Base
The car seat features a reclinable base for a more comfortable position. To recline, locate the red lever or button at the front underside of the seat base. Press or pull this mechanism and gently tilt the seat to the desired recline position. Ensure it locks securely into place.

Figure 4.2: Reclining the seat base.
4.3. Isofix Installation
The START I FIX car seat is installed using the vehicle's Isofix anchor points. This provides a rigid and secure connection.
- Extend the Isofix connectors from the car seat base by pressing the release button (often red) and pulling them out.
- Align the Isofix connectors with the Isofix anchor points in your vehicle's back seat. Push the car seat firmly until the connectors click into place. Green indicators should appear, confirming a secure connection.
- Push the car seat firmly against the vehicle's seat back to remove any slack.

Figure 4.3: Extending the Isofix bars for installation.
4.4. Video Guide: Installation and Features
Video 4.1: This video demonstrates the features and installation process of the Nania START I FIX car seat. It shows the comfortable seat, washable cover, adjustable headrest with memory foam, side protection, reclinable base, and Isofix installation. Please note that for this specific model (106-140 cm), the child is secured using the vehicle's 3-point seat belt, as shown from 1:08 in the video. Any depiction of a 5-point harness or top tether in the video is for illustrative purposes of other models and does not apply to the START I FIX 106-140 cm booster seat.
5. Operating Instructions
5.1. Securing Your Child
Once the car seat is securely installed with Isofix, follow these steps to secure your child:
- Place your child in the car seat.
- Pull the vehicle's 3-point seat belt over your child and through the designated belt guides on the car seat. Ensure the lap belt passes low over your child's hips and the shoulder belt rests across their shoulder and chest, not on their neck.
- Insert the seat belt buckle into the vehicle's buckle receiver until you hear a distinct 'click'.
- Pull the shoulder belt to tighten the entire 3-point belt system, ensuring there is no slack and the belt fits snugly against your child.
5.2. Checking for Correct Fit
Always check the following after securing your child:
- The car seat is firmly attached to the Isofix anchor points and does not move excessively.
- The vehicle's 3-point seat belt is correctly routed through all guides and is not twisted.
- The seat belt is snug against your child's body, with no more than two fingers fitting between the belt and your child's collarbone.
- The headrest is adjusted so the shoulder belt guide is at or just above your child's shoulders.
6. Maintenance
6.1. Cleaning the Cover
The fabric cover of your Nania START I FIX car seat is removable and washable.
- Carefully remove the cover from the car seat frame.
- Wash the cover by hand at 30°C using a mild detergent. Do not bleach, tumble dry, or iron.
- Allow the cover to air dry completely before reattaching it to the car seat.
- Ensure the cover is correctly reattached and all straps and buckles are accessible and functional.
6.2. Cleaning the Frame
The plastic and metal parts of the car seat frame can be cleaned with a damp cloth and mild soap. Do not use abrasive cleaners or solvents.
7. Specifications
| Feature | Specification |
|---|---|
| Model | START I FIX |
| Brand | Nania |
| Approval Standard | UN R129 (i-Size) |
| Child Height Range | 106 cm to 140 cm |
| Approximate Age Range | 5 to 10 years |
| Installation Method | Isofix (for car seat) |
| Child Restraint | Vehicle's 3-point seat belt |
| Orientation | Forward-facing only |
| Maximum Supported Weight | 40 Kilograms |
| Materials | Polyester, Plastic, Foam |
| Product Dimensions (L x W x H) | 44 x 45 x 68 cm |
| Item Weight | 5.6 Kilograms |
| Manufacturer Reference | 8359110214A |

Figure 7.1: Product Dimensions.
8. Warranty and Support
This Nania car seat is manufactured and tested in France by TEAM TEX. For warranty information, product support, or to report any issues, please contact your retailer or the manufacturer directly using the contact details provided at the point of purchase. Keep your proof of purchase for warranty claims.