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Cosco Topside Backless Booster Car Seat, vs Safety 1st Grow and Go 2-in-1 Booster Car Seat

Updated July 2026 — Safety 1st Grow and Go 2-in-1 Booster Car Seat leads on width and foldable.

The Cosco Topside offers a budget-friendly option, while the Safety 1st Grow and Go provides more versatility and features. For families seeking adaptability and comfort, the Grow and Go is the better choice.

Why Cosco Topside Backless Booster Car Seat, is better

lower price

Cosco Topside is $19.99 compared to $83.99

lightweight

Cosco Topside is designed for easy portability

compact design

Cosco Topside is compact for smaller vehicles

Why Safety 1st Grow and Go 2-in-1 Booster Car Seat is better

versatility

Safety 1st Grow and Go converts from high-back to backless

comfort features

Safety 1st Grow and Go includes ComfortWings

easy cleaning

Safety 1st Grow and Go has a machine-washable seat pad

Overall score

Cosco Topside Backless Booster Car Seat,
65
Safety 1st Grow and Go 2-in-1 Booster Car Seat
85

Specifications

SpecCosco Topside Backless Booster Car Seat,Safety 1st Grow and Go 2-in-1 Booster Car Seat
Price$19.99$83.99
Safety FeaturesBasicAdvanced
CleaningHand washMachine washable
Cup HoldersNoYes
Belt GuidesNoYes

Dimension comparison

Cosco Topside Backless Booster Car Seat,Safety 1st Grow and Go 2-in-1 Booster Car Seat

Overview of the Cosco Topside Backless Booster Car Seat and Safety 1st Grow and Go 2-in-1 Booster Car Seat

The Cosco Topside Backless Booster Car Seat is priced at $19.99, making it about 17% cheaper than the Safety 1st Grow and Go 2-in-1 Booster Car Seat, which retails for $83.99. Both products cater to children weighing between 40-100 lbs and offer essential safety features. However, their designs and functionalities differ significantly, appealing to different user needs.

Design and Comfort

The Cosco Topside Backless Booster Car Seat features an extra-plush pad that enhances comfort during car rides. It is designed to provide extra height for seatbelt positioning, ideal for children measuring between 43.4" and 57". In contrast, the Safety 1st Grow and Go 2-in-1 Booster Car Seat includes ComfortWings, which not only provide comfort but also expand as the headrest rises to accommodate a growing child. While the Topside is lightweight and easy to move, the Grow and Go offers a high-back option, making it versatile for different stages of a child's growth.

Portability and Ease of Use

Portability is a strong suit of the Cosco Topside Backless Booster, which is designed for easy movement between vehicles due to its lightweight and compact design. This makes it a convenient option for families on the go. On the other hand, the Safety 1st Grow and Go is also lightweight and foldable, and its narrow design allows it to fit three across in most vehicles. While both seats are easy to transfer, the Grow and Go's foldable feature offers an additional layer of convenience for families with multiple children.

Cleaning and Maintenance

The Cosco Topside requires hand washing of its fabric cover, which may be less convenient for busy parents. In contrast, the Safety 1st Grow and Go features a machine-washable and dryer-safe seat pad, making it significantly easier to maintain. The inclusion of two removable, dishwasher-safe cup holders in the Grow and Go adds to its practicality, allowing for easy cleaning and added convenience for children during car rides.

Safety Features

Both the Cosco Topside and the Safety 1st Grow and Go are designed with safety in mind, providing proper seatbelt positioning for children weighing between 40-100 lbs. The Cosco Topside is a straightforward belt-positioning booster, while the Safety 1st Grow and Go offers additional safety features like shoulder and lap belt guides that help children buckle themselves in. This feature may give the Grow and Go an edge, particularly for older kids who are learning to be more independent in securing themselves.

Size and Fit

The Cosco Topside is designed for children measuring between 43.4" and 57", making it suitable for a wide range of kids within the specified weight limit. However, it lacks the adaptability of the Safety 1st Grow and Go, which can convert from a high-back to a backless booster. The Grow and Go has a total seat width of 19", which expands with the headrest, ensuring a comfortable fit for growing kids. This versatility makes the Grow and Go a more accommodating option for families with children of varying sizes.

Price Comparison

The Cosco Topside Backless Booster Car Seat is priced at $19.99, which is significantly lower than the Safety 1st Grow and Go's price of $83.99. This makes the Cosco model about 76% cheaper than its competitor. While the lower price point of the Topside may appeal to budget-conscious parents, it’s essential to consider the additional features and adaptability that come with the Safety 1st Grow and Go, which may justify its higher price for some families.

Which should you buy?

Choosing between the Cosco Topside Backless Booster Car Seat and the Safety 1st Grow and Go 2-in-1 Booster Car Seat depends on your family's specific needs. If you are looking for a budget-friendly, lightweight option primarily for occasional use, the Cosco Topside is an excellent choice. However, if you prefer a versatile seat that grows with your child and offers added comfort and safety features, the Safety 1st Grow and Go is worth the investment. Ultimately, consider your child's size, your budget, and how often you will be using the seat to make the best decision for your family.