1. Setup and Assembly
The Joolz Day3 Complete Stroller is designed for easy assembly. Please ensure all components are present before beginning.
Included Components:
- Chassis including front and rear wheels
- Bassinet / seat frame
- Bassinet and seat fabric
- Safety Harness
- Extended sun hood
- Shopping basket
- Bumper Bar
Initial Assembly Steps:
- Unfold the chassis until it locks securely into place.
- Attach the front and rear wheels by pressing them into their designated slots until you hear a click.
- Mount the bassinet or seat frame onto the chassis. Ensure it is firmly attached.
- Install the bassinet or seat fabric onto the frame.
- Attach the extended sun hood and bumper bar.

This image illustrates the stroller in seat configuration, highlighting its primary features for initial setup and understanding.
2. Operating Instructions
Adjusting the Handlebar:
The handlebar is adjustable to accommodate users of different heights. Locate the adjustment buttons on either side of the handlebar and press them simultaneously to raise or lower the handle to your desired position. Release the buttons to lock it in place.
Adjusting the Footrest:
The footrest can be adjusted with one hand. Press the button or lever located on the side of the footrest and move it up or down to the desired angle for your child's comfort. Ensure it clicks into a locked position.
Seat Recline and Direction:
The seat offers a 3-position recline and can be oriented in both forward-facing and parent-facing positions. To recline, locate the recline lever behind the seat and adjust. To change the seat direction, detach the seat unit from the chassis, rotate it, and reattach securely.

This image provides a side view of the stroller, detailing the various adjustable components for optimal child comfort and parent convenience.
Canopy and Bassinet Ventilation:
The UPF 50+ canopy provides sun protection and features a peek-a-boo window. The bassinet includes ventilation for fresh air circulation. Adjust the canopy as needed for shade and privacy.

This image highlights the bassinet configuration, emphasizing features like ventilation and the elevated position for easy access to your baby.
Folding the Stroller:
The Joolz Day3 features a freestanding fold for convenient storage. Follow the instructions in your quick-start guide or refer to the official Joolz video for detailed folding steps. Ensure all items are removed from the shopping basket before folding.
Safety Harness:
Always secure your child with the 5-point safety harness when using the seat unit. Adjust the straps to ensure a snug and safe fit.
3. Maintenance
Fabric Care:
Hand wash the fabric components with tepid water and mild soap to prevent color fading. Rinse thoroughly with clean water and allow to air dry completely before reattaching to the stroller frame.
Frame and Wheels:
Regularly wipe down the aluminum frame with a damp cloth. Check the wheels periodically for debris and ensure they rotate freely. The puncture-proof tires require minimal maintenance.
Storage:
When not in use, store the stroller in a dry, clean place, away from direct sunlight to preserve fabric and frame integrity.
4. Troubleshooting
Stroller Not Folding/Unfolding Smoothly:
Ensure all locking mechanisms are disengaged. Check for any obstructions in the folding joints. Refer to the folding instructions or video for correct procedure.
Wheels Not Turning Freely:
Inspect wheels for trapped debris (e.g., hair, dirt). Clean the wheel axles and apply a small amount of silicone-based lubricant if necessary.
Seat/Bassinet Not Attaching Securely:
Verify that the seat or bassinet frame is correctly aligned with the chassis attachment points. Push firmly until you hear a distinct click, indicating it is locked.
5. Specifications
| Feature | Detail |
|---|---|
| Brand | Joolz |
| Model Number | 421001 |
| Color | Classic Blue |
| Frame Material | Aluminum |
| Age Range (Description) | Baby (from birth to 50 lbs) |
| Harness Type | 5 Point |
| Stroller Type | Modular Stroller |
| Seating Capacity | 1 |
| Number of Wheels | 4 |
| Tire Material | Rubber (Puncture-proof) |
| Item Weight | 29.1 Pounds |
| Folded Size | 32"L x 17"W x 11"H |
| Item Dimensions (L x W x H) | 33"L x 23"W x 39"H |
| Maximum Weight Recommendation | 50 Pounds |
| Bassinet Weight | 14.55 Pounds |
| Basket Weight Capacity Maximum | 29.1 Pounds |

This image provides a visual representation of the stroller's overall dimensions.
6. Warranty Information
The Joolz Day3 Complete Stroller comes with a lifetime warranty. This warranty covers manufacturing defects in materials and workmanship when the product is used under normal conditions and in accordance with the instruction manual. Please retain your proof of purchase for warranty claims.
7. Support
For further assistance, detailed product information, or to report any issues, please visit the official Joolz website or contact Joolz customer service. You can find contact details on the Joolz website or in the packaging materials.
Additional accessories such as cup holders, parasols, food trays, and travel bags are sold separately and can enhance your stroller experience. Please ensure any accessories used are compatible with the Joolz Day3 model.





