Introduction
This manual provides comprehensive instructions for the safe and proper use of your Britax Willow Brook Travel System. This system includes the Willow Infant Car Seat, Aspen Base, and Brook Stroller. Please read all instructions carefully before assembly and use, and retain this manual for future reference. For additional support, refer to the official Britax website or contact customer service.

Figure 1: Britax Willow Brook Travel System components.
Product Components
Your Britax Willow Brook Travel System package includes the following items:
- Britax Willow Infant Car Seat
- Aspen Car Seat Base
- Brook Stroller Frame
- Brook Stroller Toddler Seat
- Parent Cup Holder
- Child Snack Tray
- Instruction Manual (this document)
Setup and Installation
1. Willow Infant Car Seat Installation
The Willow Infant Car Seat features ClickTight Technology for secure installation. It is designed for infants weighing 4 to 30 lbs and up to 32 inches in height.
- With Aspen Base (LATCH or Seat Belt): Place the Aspen base firmly on the vehicle seat. Open the ClickTight panel. Route the vehicle seat belt or LATCH connectors through the designated path. Close the ClickTight panel until it clicks, ensuring a secure installation. Verify the base is tightly secured and does not move more than one inch side-to-side or front-to-back at the belt path.
- Without Base (Seat Belt): For installation without the base, route the vehicle seat belt through the extra belt path on the back of the car seat. Secure the car seat tightly with the vehicle seat belt.
- RightSize System: Adjust the harness and headrest to ensure a proper fit for your child. The RightSize system provides adjustment points at the hips, shoulders, and between the legs for optimal positioning. The harness straps should be at or below your child's shoulders when rear-facing.

Figure 2: Secure car seat installation using ClickTight Technology.

Figure 3: The RightSize System ensures a customized fit for your infant.
2. Brook Stroller Assembly
Follow these steps to assemble your Brook Stroller:
- Unfold the stroller frame until it locks into place.
- Attach the wheels by pushing them onto the axles until they click.
- Install the toddler seat or infant car seat as described in the 'Operating Instructions' section.
- Attach the parent cup holder and child snack tray to the designated slots on the stroller frame.
Operating Instructions
1. Stroller Configurations (4 Ways to Stroll)
The Brook Stroller offers four versatile configurations:
- Toddler Seat Forward-Facing: For older children who prefer to face the world.
- Toddler Seat Parent-Facing: For closer interaction with your child.
- Infant Car Seat Forward-Facing: Attach the Willow Infant Car Seat to the stroller frame facing forward.
- Infant Car Seat Parent-Facing: Attach the Willow Infant Car Seat to the stroller frame facing towards you.

Figure 4: Brook Stroller with Willow Infant Car Seat in parent-facing mode.
2. Stroller Features
- Reclining Toddler Seat: The toddler seat can be reclined to multiple positions, allowing your child to rest or sit upright. Adjust the recline mechanism located at the back of the seat.
- Water-Resistant UPF 50+ Canopy: The large canopy provides protection from sun and light rain. It includes a flip-down sun visor for additional coverage and a peek-a-boo window to check on your child.
- Large Cargo Basket: A spacious basket located under the seat provides storage for essentials. It is easily accessible from the front and rear.
- Parent Cup Holder: Attach the cup holder to the side of the handlebar for convenient access to your beverage.
- Child Snack Tray: The child tray swivels out of the way for easy child entry and exit. It provides a surface for snacks and drinks.
- One-Step Compact Fold: To fold the stroller, engage the folding mechanism (refer to the specific instructions on the stroller frame). The stroller folds compactly and stands on its own, even with the toddler seat and snack tray attached.

Figure 5: Key features of the Brook Stroller.
3. Instructional Video
Video 1: Official video demonstrating the features and usage of the Britax Willow Brook Travel System, including the Willow Infant Car Seat and Brook Stroller.
Maintenance
- Car Seat Cover: The car seat features naturally flame-retardant fabrics with no added FR chemicals. The cover is washer and dryer-friendly for easy cleanup. Refer to the care label for specific washing instructions.
- Stroller Fabric: The stroller seat material is fabric. For general cleaning, spot clean with mild soap and water. Hand wash only for deeper cleaning.
- Frame and Wheels: Wipe the metal frame with a damp cloth. Periodically check wheels for debris and ensure they rotate freely.

Figure 6: Machine washable car seat cover for easy cleaning.
Troubleshooting
- Car Seat Not Securing: Ensure the ClickTight panel is fully closed and the vehicle belt or LATCH is routed correctly. Check for any obstructions.
- Stroller Wheels Sticking: Clean any dirt or debris from the wheel axles. Apply a silicone-based lubricant if necessary.
- Stroller Not Folding: Ensure the toddler seat is in the correct position for folding (if attached) and that all locking mechanisms are disengaged before attempting to fold.
- Harness Adjustment Difficulty: Refer to the RightSize system instructions to ensure proper harness and headrest adjustment. Check for twists in the harness straps.
Specifications
| Feature | Specification |
|---|---|
| Item Weight | 53 Pounds |
| Folded Size | 28"L x 20"W x 12"H |
| Item Dimensions (L x W x H) | 34"L x 23.75"W x 42"H |
| Frame Weight | 20 Pounds |
| Stroller Seat Weight | 13.01 Pounds |
| Basket Weight Capacity (Maximum) | 55 Pounds |
| Rear Facing Car Seat Maximum Height | 32 Inches |
| Rear Facing Car Seat Weight Range | 4 to 30 Pounds |
| Harness Type | 5 Point |
| Stroller Type | Standard Stroller |
| Material Type | Metal (Frame), Fabric (Seat), Rubber (Tires), Polyester (Fabric Type) |
| Age Range Description | Newborn to Toddler |
| Installation Type | LATCH |
Warranty and Support
The Britax Willow Brook Travel System comes with a 1-Year Manufacturer Warranty. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.
For customer support, questions, or to register your product, please visit the official Britax website or contact Britax Customer Service directly. Contact information can typically be found on the product packaging or the Britax website.