Diono Airi High Back Booster Seat
- 40 to 100 lb, 43 to 57 in, ages 4+
- 4.1 lb foldable seat
- FMVSS 213B frontal impact standard
- Slim fit, 3 across in most cars
- Seat belt positioning, forward facing
- Machine washable cover
Last refreshed Jun 23, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A light, foldable high back booster that fits three across and guides the seat belt for children from preschool to early school age. It installs with the seat belt only, no anchor connectors are listed.
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ASIN: B0GYXXY434Category: Booster Car Seats
Overview
Belt guides that hold the vehicle seat belt in place do the safety work in the Diono Airi high back booster. The slim shell folds for storage and travel, and padded head support adds comfort on long rides.
Diono makes a booster light enough to move between cars and slim enough for three across. Without listed latch connectors, the seat relies on the vehicle belt to stay in place.
Who it's for
Carpools, grandparents' cars and air travel suit a booster this light and foldable. Children still needing a harnessed seat should stay in one until they meet the size range.
Pros and cons
- Very light to carry
- Folds for storage and travel
- Slim for three across
- Belt positioning guides
- No latch connectors listed
- Side impact testing not stated
- Needs vehicle belt to secure
Performance notes
A high back booster raises the child so the adult belt crosses the shoulder and hips correctly, and the guides stop it twisting. Fit depends on the vehicle seat shape as well as the child's size.
Specifications
| Brand | Diono |
|---|---|
| Dimensions & fit | |
| Maximum Weight Recommendation | 100 pounds |
| Item Dimensions D x W x H | 13.4 in D x 15.7 in W x 30.9 in H |
| Orientation | Forward facing |
| Child weight range | 40 to 100 lbs |
| Child height range | 43 to 57 inches |
| Item weight | 4.1 pounds |
| Capacity & performance | |
| Age range | 4 years and up |
| Construction & materials | |
| Color | Black Storm |
| Compatibility & installation | |
| Installation Type | Seat belt |
| Included components | |
| Unit Count | 1.0 Count |
| Other details | |
| Safety standard | FMVSS 213B, frontal impact |
| Is foldable | Yes |
| Care instructions | Removable, machine washable cover |
Frequently asked questions
How big is the Diono Airi booster?
It measures 13.4 inches deep, 15.7 inches wide and 30.9 inches high, and folds for storage.
Does the Diono Airi have latch connectors?
None are listed. Installation type is seat belt.
Can the Diono Airi fit three across?
Its narrow profile fits 3 across in most cars.
What size child fits the Diono Airi?
Children 40 to 100 lbs, 43 to 57 inches tall and ages 4 and up.