Chicco MyFit 2-in-1 Harness Booster Car Seat, vs UPPAbaby Aria V2 Lightweight Infant Car Seat - Just Under
Updated August 2026 — Chicco MyFit 2-in-1 Harness Booster Car Seat, wins on capacity and weight, UPPAbaby Aria V2 Lightweight Infant Car Seat - Just Under wins on recline and depth.
The Chicco MyFit offers better value and versatility for growing children, while the UPPAbaby Aria V2 excels in portability and premium features.
Why Chicco MyFit 2-in-1 Harness Booster Car Seat, is better
Price
Chicco MyFit is $239.99, significantly cheaper than UPPAbaby Aria V2 at $449.99.
Versatility
Chicco MyFit transitions from harness to booster, accommodating children up to 100 lbs.
Sales Rank
Chicco MyFit has a better sales rank of 3,253 compared to UPPAbaby's 5,954.
Why UPPAbaby Aria V2 Lightweight Infant Car Seat - Just Under is better
Weight
UPPAbaby Aria V2 weighs just under 6 lbs, making it one of the lightest infant car seats.
Installation
UPPAbaby features SmartSecure technology for easier installation.
Comfort
UPPAbaby has a deluxe UPF 50+ canopy and extra legroom for infants.
Overall score
Specifications
| Spec | Chicco MyFit 2-in-1 Harness Booster Car Seat, | UPPAbaby Aria V2 Lightweight Infant Car Seat - Just Under |
|---|---|---|
| Safety | ASIP, steel-reinforced | ASIP, Anti-Rebound+ |
| Installation | LATCH, LockSure | SmartSecure, LATCH |
| Comfort | ErgoBoost padding | Extra legroom, canopy |
| Versatility | 2-in-1 design | Infant seat only |
| Price | $239.99 | $449.99 |
Dimension comparison
Price Comparison
The Chicco MyFit 2-in-1 Harness Booster Car Seat is priced at $239.99, making it about 17% cheaper than the UPPAbaby Aria V2 Lightweight Infant Car Seat, which costs $449.99. For parents on a budget, the Chicco MyFit offers a more economical option without sacrificing essential safety features. The significant price difference may influence many families, particularly those looking for a reliable yet affordable car seat solution. The sales rank of the Chicco MyFit stands at 3,253, suggesting it is a popular choice among consumers, while the UPPAbaby Aria V2 holds a sales rank of 5,954, indicating it may not be as widely chosen.
Safety Features
Both car seats prioritize safety, but they employ different approaches. The Chicco MyFit includes Advanced Side Impact Protection (ASIP) and meets the Federal Motor Vehicle Safety Standard FMVSS 213a for side impacts. It features a steel-reinforced shell and energy-managing foam, enhancing its protective capabilities. On the other hand, the UPPAbaby Aria V2 also boasts Advanced Side Impact Protection with energy-absorbing EPP foam and includes an Anti-Rebound+ Panel and Load Leg for added stability during installation. While both seats are designed to keep children safe, the UPPAbaby Aria V2 emphasizes enhanced installation stability, which may appeal to safety-conscious parents.
Installation Ease
When it comes to installation, the Chicco MyFit is designed with user-friendly features like premium LATCH connectors and a LockSure belt-tightening system. These features ensure a secure installation regardless of whether the seat is being used in harness or booster mode. In contrast, the UPPAbaby Aria V2 simplifies the installation process with its SmartSecure system, which includes auto-retracting LATCH design and visual indicators for a secure fit. While both models offer straightforward installation, the UPPAbaby's SmartSecure technology may be more appealing for parents looking for a hassle-free setup.
Comfort and Ergonomics
The Chicco MyFit is designed to accommodate growing children with a 9-position headrest and a 4-position recline, providing a comfortable ride in both harness and booster modes. Its extra-deep ErgoBoost seat with dual-density foam padding enhances comfort for long journeys. Conversely, the UPPAbaby Aria V2 weighs just under 6 lbs and features a 25-position adjustable headrest, making it suitable for infants from 4 lbs. Its ergonomic aluminum carry-handle and extra legroom further enhance overall comfort. While both seats prioritize comfort, the Chicco MyFit is tailored for older children transitioning to booster mode, while the UPPAbaby Aria V2 is optimized for newborns and infants.
Size and Portability
Portability is a significant consideration for many parents, and here the UPPAbaby Aria V2 shines with its lightweight build of only 6 lbs, making it one of the lightest infant car seats on the market. Its slim 17-inch footprint allows for easy maneuverability and installation in compact cars, which is a considerable advantage for families on the go. In comparison, the Chicco MyFit is designed to fit three-across in the backseat, but it may not match the Aria V2 in terms of weight and portability. For parents who frequently travel or use public transport, the UPPAbaby Aria V2 provides a more convenient option.
Versatility and Longevity
The Chicco MyFit is a versatile 2-in-1 car seat that transitions from a 5-point harness car seat to a belt-positioning booster, accommodating children from 26.5 to 100 lbs. This feature enables extended use, making it a long-term investment for families. The UPPAbaby Aria V2, while primarily an infant car seat, also grows with the child, featuring an adjustable headrest and a two-piece Robust Infant Insert for better fit. However, it is best suited for newborns and infants, which may limit its longevity compared to the Chicco MyFit. Parents looking for a seat that can adapt as their child grows might find the Chicco MyFit more appealing.
Brand Reputation
Chicco is known for producing reliable and safe child car seats, reflected in the Chicco MyFit's bestseller rank of 3,253. Meanwhile, UPPAbaby has established itself as a premium brand in the baby gear market, offering high-quality products like the Aria V2. The Aria V2’s higher price point may indicate its premium status, but it may not have the same level of widespread consumer acceptance as the Chicco MyFit. Parents may prefer Chicco for its proven track record, while those seeking luxury and innovative features may gravitate toward UPPAbaby.
Which should you buy?
Choosing between the Chicco MyFit 2-in-1 Harness Booster Car Seat and the UPPAbaby Aria V2 Lightweight Infant Car Seat ultimately depends on your specific needs. If you are looking for a versatile, budget-friendly option that accommodates growing children, the Chicco MyFit at $239.99 is an excellent choice. However, if portability, lightweight design, and premium features are your priorities, the UPPAbaby Aria V2, priced at $449.99, might better suit your lifestyle. Each seat has its strengths, making your decision hinge on whether you value longevity and cost-effectiveness or premium design and ease of transport.

