Nuna
SKU: NUNCS15400CDR

Nuna Lumn Harness Booster Car Seat

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$680.00
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Color: Cedar
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The Nuna Lumn Harness Booster Car Seat is a forward-facing harness seat and high-back booster in one, serving children from 30 to 65 lbs in harness mode and 40 to 110 lbs in booster mode. One seat that grows with your child from harness-ready toddler through big-kid booster years. Available in multiple Nuna colorways to coordinate with your setup.

Two Modes, One Seat
HARNESS PLUS BOOSTER

Two Modes, One Seat

Lumn starts as a forward facing harnessed seat for younger kids who still need the full harness, then converts to a high back booster when they are ready for the vehicle seat belt.
  • Harness mode for forward facing
  • Converts to high back booster
  • No rethread harness
  • Years of use per seat
CONFIDENT INSTALL

Simply Secure Installation

Lumn uses the Nuna Simply Secure Installation System with clear indicators that confirm the install is correct the first time and every time.
  • Simply Secure Installation
  • Clear install indicators
  • LATCH or seat belt compatible
  • Consistent install every time
Simply Secure Installation

Don't Wait, Give Your Little One the Best.

Join thousands of happy parents. The Nuna Lumn Harness Booster Car Seat is in high demand, order now and enjoy free shipping on orders $45+.

Built for the Long Run
GROWS WITH YOUR CHILD

Built for the Long Run

Lumn fits children from 30 to 65 lbs in harness mode and 40 to 110 lbs in booster mode, with a 10-position adjustable headrest and 9 recline positions that adapt as your child grows. One seat that earns its keep across the toddler-through-tween years.
  • 30-65 lbs in harness mode
  • 40-110 lbs in booster mode
  • 10-position adjustable headrest
  • 9 recline positions
NUNA SAFETY

Flame Retardant Free, Fully Tested

Lumn is engineered to the latest safety standards with flame retardant free fabric, giving you peace of mind on both impact and materials.
  • Flame retardant free fabric
  • Latest safety standards
  • Full crash testing
  • Nuna engineering throughout
Flame Retardant Free, Fully Tested
Brand:Nuna
Product Name:AACE Booster Seat
Recommended Use:Harness mode from 30 to 65 lbs and 34 to 49 in. Booster mode from 40 to 110 lbs and 43 to 57 in.
Dimensions (Highest Position):26.25 L x 18.25 W x 32.5 H in
Dimensions (Lowest Position):23.5 L x 18.25 W x 25.5 H in
Product Weight:26.2 lbs
Child Fit:Harness mode height 34 to 49 in. Booster mode height 43 to 57 in.
Seat Features:9 recline positions, 10 position adjustable headrest, padded armrests, leatherette wrapped calf support, removable cup holders, slim design fits 3 across in most mid sized vehicles
Harness:5 point no rethread harness that stores away in booster mode
Installation:True tension door for harness mode, open belt path for booster mode, push on latch connectors, bubble free recline guides
Safety Features:All steel reinforced frame, reinforced belt path, Aeroflex side impact protection system, FMVSS 213a and 213b compliant
Materials:All weather micro knit fabric, leatherette accents, no added fire retardant chemicals
Certifications:GREENGUARD Gold Certified, FAA approved in harness mode
Care Instructions:Machine washable fabrics and inserts, seat pad removes separately, cup holders are hand washable
Color Options:Cedar, Caviar, Granite

Available Colors, Manufacturer SKU and UPC

Color: Cedar
Manufacturer SKU: CS15400CDR
UPC: 8721094518975
Color: Caviar
Manufacturer SKU: CS15400CVR
UPC: 8721094504756
Color: Granite
Manufacturer SKU: CS15400GRN
UPC: 8721094518968
    • 1- LUMN Harness Booster Car Seat
Frequently Asked Questions

What age is the Nuna LUMN Harness Booster Car Seat suitable for?

The Nuna LUMN Harness Booster Car Seat is suitable for children from 30 lbs and 34 inches tall in harness mode, and from 40 lbs up to 110 lbs in booster mode, covering the big-kid years through early adolescence.

Can the Nuna LUMN be used for newborns?

No, the Nuna LUMN is designed for children at least 30 lbs and 34 inches tall for harness mode and is not suitable for infants or newborns. A convertible infant car seat is recommended for younger children.

What is the weight capacity of the Nuna LUMN Harness Booster Car Seat?

The Nuna LUMN supports children from 30 to 65 lbs in harness mode and from 40 to 110 lbs in booster mode, providing a long-term seating solution through the big-kid years.

How does the recline function work on the Nuna LUMN?

The Nuna LUMN features 9 recline positions available in both harness and booster modes, allowing you to customize the seat angle for your child's comfort during shorter trips and longer drives.

Is the Nuna LUMN easy to install in the car?

Yes, the Nuna LUMN features True Tension door guides and Push-on LATCH connectors that make installation easy and secure, reducing the guesswork of getting a tight and proper fit in your vehicle.

Can the Nuna LUMN Harness Booster Car Seat be used for air travel?

Yes, the Nuna LUMN is FAA certified for use in harness mode, making it an approved option for airplane travel and a great choice for families who fly frequently with older children.

What materials is the Nuna LUMN made from?

The Nuna LUMN is crafted from durable materials with automotive-style leatherette accents and is GREENGUARD Gold Certified, meaning it has been tested for chemical emissions for safer everyday use around children.

How do you clean the Nuna LUMN Harness Booster Car Seat?

The Nuna LUMN seat cover and fabrics are machine washable for easy cleaning after everyday spills and messes. Always follow the specific care instructions included with the seat to maintain the fabric and materials.

How does the headrest adjust on the Nuna LUMN?

The Nuna LUMN features a 10-position adjustable headrest that grows with your child without requiring harness rethreading, making it simple to get the right fit at every stage of growth.

Is the Nuna LUMN a good option for families with multiple car seats?

Yes, the Nuna LUMN slim design allows it to fit three across in most mid-sized vehicles, making it a practical choice for families who need to install multiple car seats side by side.

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