Peg Perego Viaggio Flex 120 Booster Car Seat
- Maximum Weight Recommendation: 120 pounds
- Material Type: Aluminum, Metal, Plastic, Polyester
- Item Weight: 14 pounds
- Unit Count: 1
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A high back booster built to Peg Perego's 120 pound weight capacity, suited to families wanting a seat that lasts from toddler through the teen years.
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ASIN: B01LN83EK0Model: Viaggio Flex 120Category: Child Car Seats
Overview
The Viaggio Flex 120 is a booster seat from Peg Perego rated to 120 pounds, with what Peg Perego calls 4D Total Adjust for multi directional adjustment. It weighs 14 pounds and measures about 17.25 by 22 by 26 inches.
The age range attribute spans toddler through teen, matching the 120 pound capacity, which is unusually high for a booster and points to a seat meant to stay in use for years rather than be swapped out at each stage. Frame materials listed are aluminum, metal, plastic and polyester.
- 120 lb weight capacity
- 4D Total Adjust system
- 14 lb seat weight
- Aluminum, metal, plastic and polyester construction
Who it's for
Families wanting one booster seat that can carry a child from toddler years into the early teen years without replacing it. Less suited to anyone who wants the lightest or most compact booster for occasional carpool use, given its 14 pound weight.
Pros and cons
- Rated to 120 lb, covering toddler through teen sizing
- 4D Total Adjust headrest system grows with the child
- Aluminum frame components for structure
- At 14 lb, heavier than typical fabric boosters
- Larger footprint at 17.25 by 22 by 26 inches may not suit every back seat
Performance notes
The 4D Total Adjust system, per Peg Perego, allows the headrest and other elements to move across multiple directions to track a growing child's size, which is the main mechanism behind the wide toddler to teen range. The aluminum frame components are likely behind the 14 pound weight, heavier than fabric only boosters.
Specifications
| Brand | Peg Perego |
|---|---|
| Model | Viaggio Flex 120 |
| Dimensions & fit | |
| Maximum Weight Recommendation | 120 poundshigher than 84% of 39 child car seats |
| Item Weight | 14 poundslower than 57% of 99 child car seats |
| Item Dimensions D X W X H | 17.2 × 22 × 26 inches |
| Capacity & performance | |
| Age Range Description | Toddler, Child, Teen |
| Construction & materials | |
| Material Type | Aluminum, Metal, Plastic, Polyester |
| Color | Licorice |
| Included components | |
| Unit Count | 1 |
| Warranty & support | |
| Manufacturer Warranty Description | 2 year manufacturer warranty |
| Other details | |
| Assembly Required | No |
| Is Portable | Yes |
| Part Number | IMVF00US35BL13DX13 |
Closest rivals on specs
Disney Baby Grow and Go All-in-One Convertible Car Seat- Maximum Weight Recommendation 120 vs 100 pounds (+20%)
UPPAbaby Alta V2 High Back Booster Seat- Item Weight 14 vs 17 pounds (-18%)
- Maximum Weight Recommendation 120 vs 100 pounds (+20%)
Safety 1st Grow and Go 2-in-1 Booster Car Seat- Item Weight 14 vs 10.3 pounds (+36%)
- Maximum Weight Recommendation 120 vs 100 pounds (+20%)
Frequently asked questions
What is the weight capacity of the Peg Perego Viaggio Flex 120?
It is rated to 120 pounds.
What does 4D Total Adjust mean?
It refers to Peg Perego's adjustment system that moves the headrest and related elements in multiple directions to fit a growing child.
How much does the booster weigh?
About 14 pounds.