Chicco MyFit 2-in-1 Harness Booster Car Seat, vs Cosco Kids Topside Booster Car Seat, Pack of 2,
Updated August 2026 — Chicco MyFit 2-in-1 Harness Booster Car Seat, wins on height and weight, Cosco Kids Topside Booster Car Seat, Pack of 2, wins on age range.
The Chicco MyFit offers superior safety features and comfort, making it the better choice for long-term use, while the Cosco Kids Topside Booster is a budget-friendly option for occasional use.
Why Chicco MyFit 2-in-1 Harness Booster Car Seat, is better
Safety Features
Chicco MyFit has Advanced Side Impact Protection.
Comfort
Chicco MyFit has dual-density foam padding.
Versatility
Chicco MyFit is a 2-in-1 car seat.
Why Cosco Kids Topside Booster Car Seat, Pack of 2, is better
Price
Cosco Topside is significantly cheaper.
Portability
Cosco Topside is lightweight and compact.
Ease of Use
Cosco Topside is easy to transfer between vehicles.
Overall score
Specifications
| Spec | Chicco MyFit 2-in-1 Harness Booster Car Seat, | Cosco Kids Topside Booster Car Seat, Pack of 2, |
|---|---|---|
| Safety | ASIP | Basic |
| Installation | Easy with LATCH | Basic |
| Comfort | ErgoBoost | Plush padding |
| Versatility | 2-in-1 | Booster only |
| Price | $239.99 | $50.38 |
Dimension comparison
Price Comparison
The Chicco MyFit 2-in-1 Harness Booster Car Seat is priced at $239.99, while the Cosco Kids Topside Booster Car Seat is significantly cheaper at $50.38. This makes the Cosco booster about 79% less expensive than the Chicco model. For parents on a tight budget or looking for a simple solution, the Cosco option may be more appealing. However, the Chicco MyFit offers additional features that could justify its higher price for those seeking more comprehensive safety and comfort options.
Safety Features
Safety is paramount when it comes to car seats, and the Chicco MyFit excels with its Advanced Side Impact Protection (ASIP). It is engineered to meet the Federal Motor Vehicle Safety Standard FMVSS 213a related to side impact. The MyFit also includes a steel-reinforced shell and energy-managing foam, providing added protection for children from 26.5 to 100 lbs. In contrast, the Cosco Kids Topside Booster lacks advanced safety features like side impact protection, relying solely on its design to ensure seat belts are properly positioned for children weighing between 40 and 100 lbs. Parents prioritizing safety may lean towards the Chicco model.
Design and Comfort
The Chicco MyFit boasts an ergonomic design with an extra-deep, contoured ErgoBoost seat featuring dual-density foam padding for exceptional comfort. It also has a 9-position headrest and a 4-position recline to accommodate growing kids. The Cosco Kids Topside Booster, while lightweight and compact, offers less support with its backless design. Although it has extra-plush padding, it does not match the comfort level of the Chicco MyFit. If comfort and adaptability are key considerations, the Chicco model stands out as the superior choice.
Installation Process
Ease of installation is a crucial factor for many parents. The Chicco MyFit features premium LATCH connectors and a LockSure belt-tightening system that simplify the installation process in either harness or seat belt mode. It also includes RideRight bubble levels and a ReclineSure leveling system for optimal vehicle fit. On the other hand, the Cosco Kids Topside Booster is designed to be lightweight and portable, making it easy to transfer between vehicles, but it lacks the advanced installation features of the MyFit. For those who value a straightforward installation experience with comprehensive support, the Chicco MyFit is the better option.
Portability
Portability is one area where the Cosco Kids Topside Booster Car Seat shines. Its lightweight and compact design makes moving it from one vehicle to another effortless. This is ideal for families on the go or those who frequently travel. The Chicco MyFit, while still manageable, is bulkier due to its additional features and safety mechanisms. For parents who need a travel-friendly option and prioritize convenience, the Cosco booster is likely the more suitable choice.
Versatility
The Chicco MyFit is a 2-in-1 car seat that grows with your child, transitioning from a 5-point harness car seat for toddlers to a belt-positioning booster for older kids. It accommodates children from 26.5 to 100 lbs and is designed for ages 2 and up. The Cosco Kids Topside Booster, while designed for children from 40 to 100 lbs, is more limited in its versatility as it does not offer a harness mode. For families looking for a long-term investment that adapts to their child's needs, the Chicco MyFit provides greater versatility.
Customer Popularity
The Chicco MyFit has a sales rank of 3253, indicating its popularity among consumers, while the Cosco Kids Topside Booster has a slightly lower sales rank of 4210. This suggests that parents may have a stronger preference for the Chicco model, likely due to its enhanced safety features, comfort, and versatility. Popularity can often reflect consumer trust and satisfaction, making the Chicco MyFit a more appealing choice for many.
Which should you buy?
Choosing between the Chicco MyFit 2-in-1 Harness Booster Car Seat and the Cosco Kids Topside Booster Car Seat ultimately depends on your priorities as a parent. If safety, comfort, and long-term versatility are your primary concerns, the Chicco MyFit, priced at $239.99, is worth the investment. However, if you're looking for an affordable, lightweight option for occasional use, the Cosco Kids Topside Booster at $50.38 offers a practical solution. Consider your family's specific needs and preferences to determine which car seat best fits your lifestyle.

