Nuna makes some of the most popular premium car seats we carry at SugarBabies, and the lineup stretches from the first ride home to the booster years. The tricky part is that the models sound alike. This guide walks through each Nuna car seat we carry, with the weight and height range for every model, so you can match a seat to your car, your routine, and your budget.
The short answer: choose the PIPA Aire for the lightest carrier, the PIPA Aire RX or PIPA RX for the RELX base and its rigid-latch install, and the PIPA Urbn for taxi and city life with no base at all. For one seat that lasts years, the RAVA Next and EXEC Next convertibles cover baby through big kid.
What's an Infant Car Seat?
An infant car seat is specially designed for young babies and is used until your little one reaches the seat's maximum height or weight. Many infant car seats phase out around 30 lbs or 30 inches, which for many little ones is around 9 to 12 months of age. Infant seats click in and out of a base that stays installed in your car, and most attach to a stroller to create a travel system. They may all do similar things, but not all infant car seats are equal.
Things You Should Look for in an Infant Car Seat
- Fit in your vehicle. Infant car seats fit most cars, but double check if you drive a smaller or older model.
- Easy installation. Most install with a regular seat belt or the LATCH system, and a simpler install means fewer mistakes.
- Installation indicators. Built-in leveling systems and indicators signal whether the seat is installed correctly.
- Fabric you can live with. Durable, comfortable for baby, and ideally easy to clean when a mess happens.
- Extra safety features. Look for side impact protection, shock-absorbing materials, and quality padding rather than a bare-bones shell.
The Nuna PIPA Series, Model by Model
Nuna car seats are among the most popular infant car seats we sell. Parents love the PIPA carriers because they are light to carry, quick to install, and the design fits right in with the rest of your gear. Here is how the four current models compare, and you can browse them all in the SugarBabies Nuna collection.
Nuna PIPA Aire: The Lightest Carrier
The PIPA Aire is the lightest infant car seat in the PIPA series lineup, with a true weight of 7.8 lbs. Nuna rates it for babies from 4 to 30 lbs and 16 to 30 inches, and it comes paired with the PIPA series base, which uses a steel-reinforced True Lock install, a steel stability leg, and bubble level indicators to help confirm a correct setup.
Fabrics and inserts are machine washable, the UPF 50+ canopy has a flip-out eyeshade, and the seat is FAA certified for aircraft use. If your top priority is a carrier that will not wear out your arm, start here.
Nuna PIPA Aire RX: Light Weight Plus the RELX Base
The PIPA Aire RX covers the same 4 to 30 lb and 16 to 30 inch range, and the seat weighs 6.2 lbs without the canopy and inserts, which add roughly 2.2 lbs. What you gain over the standard Aire is the RELX base. Its True Lock rigid latch is 50 percent stronger than a typical belt latch, and the base adds an integrated anti-rebound panel, four bubble-free recline positions, and a multi-position steel stability leg with a crumple zone that absorbs impact.
The seat keeps the machine-washable fabrics, features lightweight Aeroflex foam that minimizes force transferred to baby, and includes the Sky Drape for privacy and shade. It is GREENGUARD Gold Certified, installs with a vehicle seat belt and no base for taxis and city trips, and is FAA certified for aircraft use with or without the base.
Nuna PIPA RX: The Plush Flagship
The PIPA RX also pairs with the RELX base and covers the same 4 to 30 lb and 16 to 30 inch range. The seat weighs 8.6 lbs including the canopy and inserts, and the base weighs 16.8 lbs.
Where the RX stands apart is the soft goods. It wears a soft organic jersey micro-knit fabric, a Tailor Tech memory foam headrest, and a removable UPF 50+ canopy with a mesh peek-a-boo window so you can check on baby. Side Impact Protection, a five-point harness, and the Sky Drape keep baby safe and shaded, while colored installation indicators on the base help confirm a correct install. Like the Aire RX, it installs with a vehicle seat belt and no base when needed, and it is FAA certified.
Nuna PIPA Urbn: No Base Needed
The PIPA Urbn takes a different approach: it is built for baseless installation, so you can move between your car, a taxi, or a rideshare in seconds. It fits babies from 4 to 22 lbs and under 29 inches, and it weighs 9 lbs including the canopy and insert.
We carry the Urbn as part of Nuna travel systems, like the TRVL LX Stroller + PIPA Urbn Travel System, which bundles the seat with an ultra-lightweight stroller that folds with one hand. If your days involve more city blocks than parking lots, this is the pick.
Which PIPA Fits Your Family?
- You want the lightest carrier: the PIPA Aire, the lightest seat in the PIPA lineup.
- You want the strongest base install: the PIPA Aire RX or PIPA RX with the RELX base and its rigid latch.
- You want the plushest fabrics and finishes: the PIPA RX.
- You skip the base entirely for city driving and taxis: the PIPA Urbn in a travel system.
Beyond Infant Seats: Nuna Convertible Car Seats
Planning for the seat that comes after the PIPA, or want one seat that lasts for years? Nuna's convertibles install once and stay in the car. Both are in our convertible car seats collection.
Nuna RAVA Next
The RAVA Next is a convertible car seat designed for longevity from birth to big kid, adapting from rear-facing to forward-facing modes. Rear-facing, it fits 5 to 50 lbs with a seat belt install or 5 to 35 lbs with the lower anchor belt, at 18 to 49 inches. Forward-facing, it fits 30 to 65 lbs with a seat belt or 30 to 40 lbs with the lower anchor belt, at 34 to 49 inches.
True Tension doors deliver a secure fit without the struggle, an all-steel frame and Side Impact Protection pods handle safety, and the no-rethread five-point harness adjusts as your child grows. The slim design fits three across in most mid-sized vehicles, and it is FAA certified.
Nuna EXEC Next
The EXEC Next is the all-in-one version: rear-facing, forward-facing, and then a belt-positioning booster for 40 to 110 lbs and 43 to 57 inches at age 4 and up. Its harnessed weight and height ranges match the RAVA Next, it adds a one-handed, 12-position height-adjustable headrest, and the harness stores inside the seat in booster mode. If you want to buy one seat and be done, this is it.
What Makes Nuna Worth It?
Across the models we carry, the same themes repeat: steel-reinforced installs, side impact protection, machine-washable fabrics, and materials sourced with no added fire-retardant chemicals. Those details are standard on Nuna seats, not upgrades. We break down where the money actually goes in our guide to why families buy Nuna baby gear.
Frequently Asked Questions
What is the lightest Nuna infant car seat?
The PIPA Aire is the lightest infant car seat in the PIPA series lineup, with a true weight of 7.8 lbs.
Can Nuna PIPA car seats be installed without a base?
Yes. The PIPA Aire RX and PIPA RX can both be installed with a vehicle seat belt and no base, and the PIPA Urbn is designed for baseless installation full time.
How long can my baby use a Nuna PIPA infant car seat?
The PIPA Aire, PIPA Aire RX, and PIPA RX fit babies from 4 to 30 lbs and 16 to 30 inches. The PIPA Urbn fits 4 to 22 lbs and under 29 inches. Many babies outgrow an infant seat around 9 to 12 months of age.
Are Nuna car seats FAA certified for flying?
Yes. The PIPA Aire, PIPA Aire RX, and PIPA RX are FAA certified for aircraft use, with the Aire RX certified with or without its base. The RAVA Next is FAA certified, and the EXEC Next is FAA certified in its harnessed modes. Our guide to lightweight infant car seats for travel covers flying with baby in more detail.
What is the difference between the RAVA Next and the EXEC Next?
Both share the same rear-facing and forward-facing harness ranges. The EXEC Next adds a belt-positioning booster mode for 40 to 110 lbs, so one seat lasts through the booster years, while the RAVA Next is a dedicated rear-facing and forward-facing harness seat.
Finding the Right Fit
The best way to choose is to see the seats side by side, so if you are nearby, stop by our Sumner showroom and compare them in person before you decide. You can shop the full lineup any time in the SugarBabies Nuna collection or browse all of our infant car seats online.