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2-in-1 vs All-In-One Travel Systems: Which Should You Buy?

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Choosing between a 2-in-1 vs all in one travel system depends on your long-term needs. Both options combine a stroller and car seat for seamless transitions. The Cybex EOS 2-in-1 adapts from a newborn carriage to a toddler seat, offering five riding modes. The Doona All-in-One transforms instantly from car seat to stroller but supports only rear-facing infants. One system grows with your child, while the other prioritizes compact portability for early months.

Key differences

AspectCybex EOS 2-in-1 Stroller with Aton G2Doona All-in-One Infant Car Seat & Stroller
Seat Design2-in-1All-in-One
Riding Modes5 modesRear-facing only
Max Weight50 lbs30 lbs
Stroller Weightnot listed17.2 pounds
Folded Dimensionsnot listed17.4 x 26 x 22.4 inches

Which one should you choose?

Choose Cybex EOS 2-in-1 Stroller with Aton G2 if

  • You want a stroller that converts from a lie-flat newborn carriage to a toddler seat.
  • You need a system that supports children up to 50 lbs.
  • You prefer reversible seat orientation for face-to-face interaction.

Choose Doona All-in-One Infant Car Seat & Stroller if

  • You need an ultra-compact solution that folds into a car seat in seconds.
  • You prioritize a lightweight, portable unit for travel or small spaces.
  • You only need a rear-facing seat for infants up to 30 lbs.

Verdict: The Cybex EOS 2-in-1 suits families seeking a long-term solution that grows from infancy to toddlerhood. The Doona All-in-One is ideal for parents who value compact portability and quick transitions for newborns. Choose the system that aligns with your weight limits and storage constraints.

Seat Design: 2-in-1 vs All-in-One

Stroller type

Edge: Cybex EOS 2-in-1 Stroller with Aton G2

The Cybex EOS is a 2-in-1 system that includes a separate carriage and seat unit. It adapts as your child grows from newborn to toddler. The Doona is an all-in-one travel system where the car seat itself becomes the stroller. This means you do not need a separate stroller frame or bassinet. The Doona combines the car seat and stroller into one single unit. This design is unique because it eliminates the need to transfer a sleeping baby between separate components. The Cybex offers more modular flexibility with its distinct carriage and seat modes.

Seating configuration

Edge: Cybex EOS 2-in-1 Stroller with Aton G2

The Cybex EOS provides five distinct modes of use. You can choose front-facing or rear-facing carriage mode for newborns. It also offers front-facing and rear-facing seat modes for toddlers. The seat unit is reversible, allowing you to face your child toward you or the world. The Doona is rear-facing only. It functions as a rear-facing car seat and a rear-facing stroller. It does not offer a forward-facing option or a separate toddler seat. The Cybex allows for more varied seating orientations and positions as your child develops.

Weight capacity

Edge: Cybex EOS 2-in-1 Stroller with Aton G2

The Cybex EOS stroller seat unit is suitable for children up to 50 lbs. This allows the stroller to be used well into the toddler and preschool years. The Doona is suitable for infants weighing between 4 lbs and 30 lbs. Once your child exceeds 30 lbs, you must transition to a different stroller system. The Cybex supports a higher maximum weight, extending the useful life of the stroller component. The Doona is limited to the infant stage only.

Conversion speed

Edge: Doona All-in-One Infant Car Seat & Stroller

The Doona converts from car seat to stroller in seconds with a one-click mechanism. This allows you to move from a car to a stroller without disturbing a sleeping child. The process is designed for immediate transition. The Cybex EOS requires more steps to convert between carriage and seat modes. You must perform simple steps to transform the carriage into a reclining toddler seat. The Doona offers a faster, more intuitive transition for on-the-go parents who need quick changes.

Portability

Edge: Doona All-in-One Infant Car Seat & Stroller

The Doona stroller weighs 17.2 pounds. It is designed to be lightweight and portable. The folded dimensions are 17.4 x 26 x 22.4 inches. The Cybex EOS is larger and heavier. Its dimensions are 23.6 inches in length, 37.4 inches in width, and 44.3 inches in height. The Cybex includes a separate carriage and seat, which adds to the overall bulk. The Doona is more compact and lighter, making it easier to carry and store in smaller spaces.

Choose the right travel system for you

Parents needing long-term stroller growth

Our pick: Cybex EOS 2-in-1 Stroller with Aton G2

The Cybex EOS adapts from a lie-flat carriage to a seat supporting up to 50 lbs. You get five riding modes, including reversible orientation. This allows you to keep using the same frame as your child grows from newborn to toddler, offering more longevity than systems limited to infant weight ranges.

Travelers prioritizing compact portability

Our pick: Doona All-in-One Infant Car Seat & Stroller

The Doona transforms from car seat to stroller in seconds with a one-click mechanism. It folds to 17.4 x 26 x 22.4 inches and weighs 17.2 lbs. This compact design fits easily in cars, trains, or planes. You avoid carrying separate heavy components, making airport transitions and errands significantly smoother.

Buyers wanting integrated safety features

Our pick: Doona All-in-One Infant Car Seat & Stroller

The Doona includes side impact protection, an anti-rebound bar, and a 5-point harness. It is FAA aircraft approved and features a UPF 50+ canopy. The ergonomic infant insert supports neck and back alignment. You get certified safety and sun protection in a single, unified unit without needing additional accessories.

Shoppers seeking versatile seating positions

Our pick: Cybex EOS 2-in-1 Stroller with Aton G2

The Cybex EOS offers front-facing and rear-facing modes for both carriage and seat units. You can face your child toward you for interaction or toward the world for exploration. This reversibility provides flexibility for different stages of development, allowing you to adjust the seating orientation as your child’s preferences change.

Quick picks

#ProductBest forPrice
1 Cybex EOS 2-in-1 Stroller with Aton G2 parents wanting a lie-flat carriage and reversible seat Check price of Cybex EOS 2-in-1 Stroller with Aton G2 on Amazon
2 Doona All-in-One Infant Car Seat & Stroller Newborns and tight urban spaces Check price of Doona All-in-One Infant Car Seat & Stroller on Amazon

The products compared

Cybex EOS 2-in-1 Stroller with Aton G2

Best for: parents wanting a lie-flat carriage and reversible seat

Seat Design
2-in-1 (what this guide is about)
Included Car Seat
Aton G2
Riding Modes
5
Seat Orientation
Reversible
Stroller Max Weight
50 lbs
Stroller Type
Travel System

View on Amazon: Cybex EOS 2-in-1 Stroller with Aton G2 Affiliate link

The Cybex EOS is a 2-in-1 travel system featuring the Aton G2 car seat. It offers five riding modes, including lie-flat carriage and reversible seat options. The seat unit supports up to 50 lbs. Dimensions are 23.6 inches wide by 44.3 inches high. This setup suits parents who want a stroller that adapts from newborn to toddler stages.

Pros

  • Five distinct riding modes including travel system configuration
  • Reversible carriage and seat for facing parent or forward
  • Lie-flat carriage mode for newborn comfort
  • Aton G2 car seat included for travel system use
  • Seat unit supports children up to 50 lbs

Cons

  • Carriage mode is not self-standing; requires floor placement
  • No mention of one-hand folding mechanism in data
  • Stroller width is 23.6 inches, which is wider than compact all-in-one systems

Good fit if

  • You need a lie-flat bassinet option for newborns
  • You want a reversible seat to face your child
  • You prefer a dedicated 2-in-1 system over an all-in-one

Skip if

  • You need a single-piece all-in-one travel system
  • You require a self-standing bassinet for easy indoor storage
  • You prioritize a compact fold for small car trunks

Verdict: Cybex EOS 2-in-1 Stroller + Aton G2 is a versatile choice for parents who value the flexibility of a lie-flat carriage and reversible seat. It fits those who want a dedicated stroller and car seat combo rather than an integrated all-in-one unit.

Doona All-in-One Infant Car Seat & Stroller

Best for: Newborns and tight urban spaces

Seat Design
All-in-One (what this guide is about)
Included Car Seat
Doona
Car Seat Weight Range
4 lbs.–30 lbs.
Seat Orientation
Rear-facing only
Car Seat Base
LATCH Car Seat Base
Stroller Type
Travel System

View on Amazon: Doona All-in-One Infant Car Seat & Stroller Affiliate link

The Doona is an all-in-one travel system that converts from car seat to stroller in seconds. It weighs 17.2 lbs and measures 17.4 inches wide. The seat is rear-facing only for infants weighing 4 to 30 lbs. It includes a LATCH base and an infant insert. This compact design suits parents prioritizing seamless transitions and narrow width for tight spaces.

Pros

  • Converts from car seat to stroller with one click
  • Narrow 17-inch width fits through standard doorways
  • UPF 50+ water-repellent canopy provides sun protection
  • Includes LATCH base and infant insert for newborns

Cons

  • Rear-facing only limits use to infants under 30 lbs
  • Heavier 17.2 lb stroller weight compared to standard models
  • Folded dimensions are bulky for small car trunks

Good fit if

  • You want a single unit that acts as both car seat and stroller
  • You need a narrow stroller for crowded urban environments
  • You prioritize quick transitions without removing the infant from the seat

Skip if

  • You need a stroller for toddlers or older children
  • You require a lightweight stroller under 15 lbs
  • You need a forward-facing seat option for growing children

Verdict: Doona All-in-One Car Seat & Stroller is ideal for parents of newborns who need a compact, integrated system. It works best for those who value the convenience of a one-click conversion over extended stroller longevity.

Specifications side by side

Spec Cybex EOS 2-in-1 Stroller with Aton G2 Doona All-in-One Infant Car Seat & Stroller
Included Car Seat Aton G2 Doona
Riding Modes 5 not stated
Car Seat Weight Range not stated 4 lbs.–30 lbs.
Seat Orientation Reversible Rear-facing only
Stroller Max Weight 50 lbs not stated
Car Seat Base not stated LATCH Car Seat Base
Stroller Type Travel System Travel System
Seating Configuration Bassinet / Pramette not stated
Target Audience Infants, Toddlers, Newborns not stated
Features Canopy not stated
Seat Design 2-in-1 All-in-One
Dimensions 23.6 × 37.4 × 44.3 inches 39 × 17 × 34 inches
Weight not stated 17.2 pounds
Color Moon Black Deep Blue
Model 524002673 SP101-10-046-003
Size not stated 17.4*26*22.4 Inch

Frequently asked questions

Which travel system is easier to maneuver in tight spaces?

The Doona All-in-One Infant Car Seat & Stroller is designed for compact environments. Its width measures just 17 inches, making it ideal for narrow aisles and small elevators. This slim profile helps you navigate urban settings with less hassle compared to wider stroller frames.

Can a 2-in-1 stroller convert from a bassinet to a seat?

Yes, the Cybex EOS 2-in-1 Stroller adapts to your child's growth. It starts with a lie-flat carriage for newborns and converts into a reversible seat for toddlers. This flexibility allows you to use the same system through multiple developmental stages without needing additional attachments.

How heavy is the Doona when carrying it alone?

The Doona All-in-One weighs 17.2 pounds. This relatively low weight makes it manageable for one person to carry, especially when transitioning from car to public transport. Its integrated handle simplifies lifting, which is helpful for parents handling groceries or other items simultaneously.

What are the overall dimensions of the Cybex EOS?

The Cybex EOS measures 37.4 inches in width, 44.3 inches in height, and 23.6 inches in length. These dimensions provide a stable base for the stroller. The width may require more space in crowded areas compared to narrower all-in-one models, but it offers a roomy ride.

Is the Doona suitable for older toddlers?

The Doona is best for newborns and infants. It is an integrated car seat that converts to a stroller, focusing on early-stage convenience. It is not designed for extended use with older toddlers. If you need a system that grows with your child, a 2-in-1 option is more appropriate.

Does the Cybex EOS come in different colors?

The Cybex EOS 2-in-1 Stroller with Aton G2 is available in Moon Black. This specific color option provides a classic, neutral look. The model number 524002673 identifies this specific configuration. You can check current availability for other color variations if this option does not match your preference.

Which system offers more riding positions for the child?

The Cybex EOS 2-in-1 offers five riding modes. These include a lie-flat carriage position and reversible seat orientations. This variety allows you to adjust the child's view and comfort level as they grow. The Doona focuses on a single integrated position for simplicity and quick transitions.

See also