Nuna LUMN Harness Booster Car Seat

Booster with harness for the little-big kids.

The Nuna LUMN Harness Booster Car Seat is a 2-in-1 forward-facing car seat designed to grow with your child, converting from a 5-point harness booster to a belt-positioning booster for extended use. Built with Nuna’s signature premium materials and thoughtful design, LUMN delivers long-lasting comfort, safety, and value.

Engineered for secure installation and everyday ease, the LUMN features advanced safety elements to support your child through multiple growth stages. Its adjustable design ensures a proper fit as your child grows, while the refined, durable construction reflects Nuna’s commitment to quality and performance.

Ideal for families seeking a harness-to-booster car seat that balances safety, comfort, and longevity, the Nuna LUMN offers a reliable solution for forward-facing travel.