Nuna Booster Seats: The Ultimate Guide for Parents

At ANB Baby, we understand that there’s nothing more important to parents than the safety and comfort of their child during car rides. The Nuna AACE 2-In-1 Booster Car Seat and the Nuna Lumn Harness Booster stand out in the crowded market of booster seats, offering top-notch safety features, comfort, and adjustability. In this comprehensive ANB Baby guide, we’re doing a deep dive into Nuna’s booster seat lineup, including their features, specifications, and benefits. We’ll also talk about how it compares with other Nuna models to help you make an informed decision about what’s best for your little one. 

At What Age Should You Switch to a Booster Seat?

According to the American Academy of Pediatrics (AAP), children should remain in a five-point harness until they exceed their car seat's height and weight limits, which can often accommodate children up to 65 pounds (check your car seat owner’s manual). Before transitioning to a belt-positioning booster seat, verify that your child meets the necessary requirements. While laws and regulations vary by state, children generally need to be at least 4 or 5 years old. More crucially, they should weigh at least 40 pounds and be at least 35 inches tall, able to sit with their back against the vehicle seat and knees bent comfortably at the edge. Additionally, they must demonstrate the maturity to sit properly for the entire trip, without slouching or mispositioning the seat belt. Always consider these factors to determine if your child is ready for a booster seat.

The Nuna Lumn and AACE booster seats are designed to accommodate this critical growth phase:

• Nuna Lumn: Transitions from a 5-point harness (30-65 lbs, 34-49") to a belt-positioning booster (40-110 lbs, 43-57").
• Nuna AACE: Converts from a high-back booster (40-110 lbs, 38-60") to a backless booster (50-120 lbs, 38-60"). 
  

Meet the Nuna Lumn: The Ultimate Big-Kid Booster Seat

The Nuna Lumn Harness Booster is the ultimate upgrade for growing kids, blending safety, style, and smart design. Here’s why parents love it:

• Grows with your child: Transforms from a 5-point harness (30-65 lbs, 34-49") to a belt-positioning booster (40-110 lbs, 43-57")
• Premium safety features: All-steel frame, Aeroflex™ side-impact protection, and True Tension™ secure install
• Comfort for the win: 10-position headrest, 9 recline options, and leatherette-wrapped calf support
• Travel-friendly: FAA-approved for airplane use (in harness mode)
• Space-saving design – Slim profile fits 3 across in most midsize cars

Specifications of the Nuna Lumn Booster Seat: Weight and Dimensions

Before purchasing, check these key specs to ensure the Lumn fits your child and vehicle:

Weight limits:

• Harness mode: 30–65 lbs
• Booster mode: 40–110 lbs

Height limits:

• Harness mode: 34–49"
• Booster mode: 43–57"

Dimensions

• Seat dimensions (highest position): 26.25" L x 18.25" W x 32.5" H
• Seat dimensions (lowest position): 23.5" L x 18.25" W x 25.5" H
• Product weight: 26.2 lbs

Introducing the Nuna AACE: The Versatile Booster Seat

The Nuna AACE 2-In-1 Booster Car Seat is designed for parents who want the best for their children. This booster seat is a top choice for families due to its excellent safety standards, superior quality, and customizable fit. Whether you're planning a short trip to the store or a long cross-country journey, the Nuna AACE ensures your child rides in style and comfort.

The AACE Nuna booster seat is a versatile and adjustable option, providing numerous benefits:

• Adjustability: The AACE features a 10-position adjustable headrest, expanding side wings, and adjustable seat depth to grow with your child.
• Safety: It includes energy-absorbing foam, side impact protection, and colored belt path indicators to ensure correct installation.
• Comfort: With built-in armrests, ventilation panels, and breathable, machine-washable fabric, the AACE ensures a comfortable ride for your child.
• Ease of Installation: The AACE can be installed with or without the backrest, and the lower anchor connectors allow for an easy, secure fit.

Specifications of the Nuna AACE Booster Seat: Weight and Dimensions

Understanding the specific dimensions and weight of the Nuna AACE can help you determine if it's the right fit for your vehicle and child:

• Overall Seat Dimensions (Highest Position - HBB): L 15 x W 22.5 x H 33 in.
• Overall Seat Dimensions (Lowest Position - HBB): L 14.6 x W 21.5 x H 26 in.
• Product Weight: 15.6 lbs.

What is the Height and Weight Limit for a Nuna Booster Seat?

The Nuna Lumn Harness Booster and the Nuna AACE 2-In-1 Booster Car Seat are excellent booster seat options designed to keep your child safe as they grow. While both meet rigorous safety standards, they cater to slightly different needs.

The Nuna Lumn is ideal for children transitioning from a 5-point harness to a booster. In harness mode, it accommodates kids 30-65 lbs and 34-49" tall, typically starting around age 2+ (when ready for forward-facing). As a belt-positioning booster, it fits children 40-110 lbs and 43-57" tall, generally age 4+.

For older children ready for belt-positioning only, the Nuna AACE offers two configurations:

• High-back booster mode (40-110 lbs, 38-60", age 4+)
• Backless booster mode (50-120 lbs, 38-60", age 5+)

The key difference? The Lumn provides a safer transition with its 5-point harness option for younger kids, while the AACE focuses on versatility for older children with its backless conversion. Both deliver Nuna's signature safety and comfort, with the Lumn being more compact for tight vehicle setups.

Looking for an Infant-to-Big Kid Car Seat Alternative? Check Out the Nuna EXEC, the All-In-One Car Seat

For parents seeking a versatile, all-in-one car seat that can grow with their child from infancy through the booster seat years, the Nuna EXEC is an excellent choice. Here’s why the Nuna EXEC stands out:

• Versatility: The EXEC transitions from a rear-facing car seat to a forward-facing car seat with a five-point harness and then into a booster seat.
• Extended Use: Suitable for children from 5 pounds to 120 pounds, the EXEC can be your child's first and last car seat.
• Ease of Installation: The TrueTension system makes installation straightforward, with simple instructions and a secure fit using the vehicle seatbelt.
• Safety Features: The all-steel frame, side impact protection, and Aeroflex side impact protection system ensure maximum safety.
• Comfort and Convenience: Features like an adjustable leg rest, built-in cup holders, magnetic harness keepers, and machine-washable fabrics enhance comfort for your child and convenience for parents.
• High-Quality Materials: Bamboo-blend fabrics are naturally fire-resistant without the use of chemicals, and the seat is GREENGUARD Gold certified, ensuring it does not contribute to indoor air pollution or chemical exposure.

Nuna Lumn vs. Exec vs. AACE: Which Nuna Booster Seat Is Best for Your Family?

Still debating Nuna Lumn vs. Exec vs. AACE? Here's the breakdown:

Nuna Booster Seat with Harness: Is it Available?

Looking for a Nuna booster seat with harness capabilities? We've got two excellent solutions! The Nuna Lumn serves as a dedicated harness-to-booster seat, perfect for children transitioning from car seats, featuring a 5-point harness for kids 30-65 lbs that converts to a belt-positioning booster up to 110 lbs. Alternatively, the Nuna EXEC provides a complete all-in-one solution, progressing from rear-facing infant seat to forward-facing harness seat (5-65 lbs) before becoming a booster.

While the popular Nuna AACE model functions solely as a belt-positioning booster, both the Lumn and EXEC deliver Nuna's renowned safety in harness configurations, with the Lumn offering a more compact design for older children making the transition, and the EXEC covering the full spectrum from infancy through booster years. These options ensure parents can maintain harness security while gradually introducing booster independence.

Can Nuna RAVA Convert to a Booster?

No, the Nuna RAVA cannot convert to a booster seat. It is designed to accommodate children from 5 pounds to 65 pounds or 49 inches, transitioning from rear-facing to forward-facing. The RAVA typically lasts until a child is around 5 or 6 years old, at which point they can transition to a booster seat like the Nuna AACE. For a convertible option that includes a booster mode, Nuna offers the EXEC model.

Why Is Nuna So Expensive?

Nuna products, including the AACE booster seat, come with a higher price tag compared to other brands. That said, it’s an investment that’s well worth it for a number of reasons:

• Premium Materials: Nuna uses high-quality, durable materials that ensure longevity and safety.
• Advanced Safety Features: The AACE is equipped with energy-absorbing foam, side impact protection (SIP) pods, and an all-steel frame for maximum safety.
• Ease of Use: Features like the TrueTension system for easy installation, machine-washable fabrics, and adjustable headrests and seat depths contribute to the overall convenience.
• Certifications: The AACE is GREENGUARD Gold Certified, ensuring it does not contribute to indoor air pollution or chemical exposure.

The Bottom Line: Why Choose a Nuna Booster Seat?

The Nuna AACE 2-In-1 Booster Car Seat is an excellent investment for parents looking for a high-quality, safe, and comfortable booster seat. With its adjustable features, superior safety ratings, and ease of use, this Nuna booster seat offers a perfect blend of functionality and style. Whether transitioning from the Nuna RAVA or looking for a long-term solution with the Nuna EXEC, Nuna provides a range of options to meet your child’s needs from infancy through their booster years. Trust the Nuna AACE to deliver a booster seat experience that prioritizes your child’s safety and comfort on every journey.