Peg Perego Viaggio Flex 120 Booster
- Car_seat
- 120 pounds
- 14 pounds
- 17.2 × 22 × 26 inches
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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How it ranks among the 125 car_seats we track
4.4★ across 403 Amazon ratings, Bayesian-smoothed toward the category average.
403 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
200+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 125 car_seats we track - how the scorecard works · full car_seats data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
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.
Strengths and trade-offs
Drawn from this product's published specifications.
- 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 |
|---|---|
| Model | IMVF00US35BL13DX13 |
| Material | Aluminum, Metal, Plastic, Polyester |
| Weight Capacity | 120 pounds |
| Item Weight | 14 pounds |
| Dimensions | 17.2 × 22 × 26 inches |
| Age Range | Toddler, Child, Teen |
How it compares
This product against the closest alternatives we track in car_seats.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Peg Perego Viaggio Flex 120 BoosterThis product | 4.4 / 5 | 403 | 4.0 / 5 |
| Graco TurboBooster 2.0 Backless Booster Car SeatGraco | 4.8 / 5 | 11,473 | 4.7 / 5 |
| Cosco BC030BJDZ Car SeatCosco | 4.7 / 5 | 14,861 | 4.6 / 5 |
| Safety CC409HMO Car SeatSafety | 4.7 / 5 | 34,724 | 4.6 / 5 |
| Doona SP101-10-033-003 Car SeatDoona | 4.8 / 5 | 15,335 | 4.6 / 5 |
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Questions about the Peg IMVF00US35BL13DX13
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
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.