If you’re wondering, what are the differences between Britax Roundabout G4.1 and Diono Rainier here’s your answer, compare and find out which is best for you! See the features and the differences that make them better or worse.
Britax Roundabout G4.1 vs Diono Rainier

Britax Roundabout G4.1

Diono Rainier

Spec Comparison of Britax Roundabout G4.1 and Diono Rainier

Britax Roundabout G4.1 Diono Rainier
Our rating: Our rating:
Type
Convertible Car Seat All-In-One Convertible Car Seat
Color Options
Dash, Luna, Marthon, Silverlake Black forest, Glacier, Midnight black, Orchid, Black mist, Black plum
Child Weight Min – Rear Facing
5 lbs
5 lbs
Child Weight Max- Rear Facing
40 lbs
50 lbs
Child Weight Max- Forward Facing
20-55 lbs 20-90 lbs
Child Standing Height
46″ or less
44″ or less
Child Seated Shoulder Height Min – Rear Facing
9″
Child Seated Shoulder Height Max – Rear Facing
15.75″
Child Seated Shoulder Height – Forward Facing
12 – 15.75″
Shoulder Width
13″
14″
Inside Hip Width
11″
Inside Seat Depth
11″
12″
Inside Seat Height
23″
External Widest Point
19″
Type of Harness
5 point No Re-thread Harness Safe Stop energy absorbing harness system
Lowest Harness Position
8″
Highest Harness Position
17.5″
16.5″
Expiration Date
7 years 8 years as harness: 12 years as booster
Car Seat Weight
17.6 lbs
28.4 lbs
Car Seat Height
26″
28.5″
Car Seat Width
18.5″
18.5″
Car Seat Depth
21″
16″
Features
  • Safe cell impact protection is an integrated system of safety components that work together to protect your child beyond the federal safety standards, this includes our impact absorbing base and complete side impact protection plus
  • Safecell complete side impact protection surrounds your child in a deep protective shell designed to absorb crash forces and shield your child from debris
  • Tangle-free, 5-point harness prevents the straps from twisting making it easier to load your child into the seat and ensuring a safer ride
  • 3 recline positions for your child’s comfort and safety
  • Quick-adjust 2-position buckle allows you to easily move the buckle outward for a comfortable, secure fit as your child grows
  • The Diono Rainier is the ultimate in car seat safety, made with a full steel frame for unmatched protection and durability
  • 12-position adjustable head support and reinforced extra-deep side walls with energy-absorbing EPS foam surround your child’s head and body for maximum side impact protection
  • Grows with your child from birth to booster: rear-facing from 5-50 lbs., forward-facing from 20-90 lbs. in a five-point harness, and booster mode from 50-120 lbs. (up to 57″ tall)
  • Space-saving design allows extra room for passengers while providing spacious interior for your child
  • New cover designs inspired by European fashion, featuring premium plush fabric for ultimate comfort, better longevity and durability
  • Steel alloy frame and aluminum reinforced sides
  • Adjustable head support, reinforced for complete side impact safety

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Britax Roundabout G4.1 Reviews

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    Britax Roundabout G4.1 vs Diono Rainier

    Britax Roundabout G4.1 vs Diono Rainier