| 1 | High-Back Belt-Positioning Booster | Raises a child so the vehicle’s lap-and-shoulder belt can fit correctly. The back and head-support area can help guide the shoulder belt and provide support. | Check the approved child size range, belt guides, head-restraint compatibility, and whether the product fits the intended vehicle seats. |
| 2 | Backless Booster | Raises the child without an integrated back or head support. It relies on the vehicle seat and head restraint for upper-body and head support. | Confirm that the vehicle seat provides suitable head support and that the lap belt lies low across the hips or upper thighs, with the shoulder belt across the chest. |
| 3 | Convertible High-Back / Backless Booster | Can be used in a high-back configuration and, where the instructions allow, converted to a backless booster as the child grows. | Review the separate size limits and instructions for each configuration; conversion does not mean every mode is suitable for every child or vehicle. |
| 4 | Lower-Anchor-Compatible Booster | Some boosters include connectors that attach to a vehicle’s lower anchors to help keep the seat in place when it is unoccupied. | Lower anchors do not replace the vehicle seat belt as the child’s restraint in a belt-positioning booster. Check vehicle and product instructions for permitted use. |
| 5 | Compact Travel Booster | Designed with portability or reduced storage space in mind; construction and folding features vary by product. | Check the product’s approval for the destination market, child-size limits, installation instructions, and whether its design is suitable for the intended vehicle seat. |
| 6 | Adjustable-Width Booster | Some designs provide adjustable side or seating dimensions to accommodate growth or different seating positions. | Ask for the seat’s dimensions in each setting. Verify vehicle fit, belt-guide positioning, and whether adjustment is allowed while the seat is occupied. |
| 7 | Adjustable-Height Belt Guides | Many high-back models offer more than one shoulder-belt guide position to support correct belt routing as a child grows. | Look for clear adjustment instructions and confirm that the shoulder belt can lie flat across the chest and shoulder without contacting the neck. |
| 8 | Removable-Cover Design | Some products have removable covers to support cleaning and routine care; materials and washing instructions differ. | Check care-label directions, replacement-cover availability, and whether the cover can be removed and refitted without affecting belt guides or other components. |
| 9 | Market-Specific Regulatory Compliance | Child restraint requirements and approval labels differ by sales market. Examples include FMVSS No. 213 in the United States and UN Regulation No. 129 in markets applying that regulation. | Request the applicable approval documentation and product labeling for each destination. A product’s approval in one market does not automatically establish approval in another. |
| 10 | Vehicle-Fit and Belt-Positioning Design | A booster’s core function is to position the child so the vehicle belt fits properly. Fit can vary with the child, booster, vehicle seat, and belt geometry. | Assess real vehicle compatibility and provide clear fit-check guidance. Follow both the booster instructions and vehicle manual, and observe local child-restraint laws. |