Car seat liners and inserts: safety notes
Are aftermarket inserts or liners safe to use with a car seat?
Britax Seat Saver Waterproof Liner: Forum users treat the Britax liner as approved for Britax seats because Britax says it was crash-tested for them; for other harnessed seats they say it may fit but has not been tested. Britax Head & Body Support Pillow: Forum members were unsure whether the pillow was crash tested and for which seats, and were reassured once Britax's statement that it is approved for use in all Britax infant and convertible seats was quoted. It must not be used as an infant insert, and must not be used for children over 22 lbs. Several posters said it looks much like the aftermarket Snuzzler insert, which some consider unsafe, and debated whether a manufacturer-branded version is any different.
| Product | Why | Seat approval | Age and weight limits | Heat and comfort |
|---|---|---|---|---|
| 1. Britax Seat Saver Waterproof Liner sold by megababiesusa.com | Forum users treat the Britax liner as approved for Britax seats because Britax says it was crash-tested for them; for other harnessed seats they say it may fit but has not been tested. | Forum users treat the Britax liner as approved for Britax seats because Britax says it was crash-tested for them; for other harnessed seats they say it may fit but has not been tested. review | - | A forum user who used the Britax pad in a Boulevard during potty training reported no effect on fit or harness tightness but found it made the child very hot; they suggest sweaty children may do better without it. review |
| 2. Britax Head & Body Support Pillow (SKU S864900) sold by megababiesusa.com | Forum members were unsure whether the pillow was crash tested and for which seats, and were reassured once Britax's statement that it is approved for use in all Britax infant and convertible seats was quoted. | Forum members were unsure whether the pillow was crash tested and for which seats, and were reassured once Britax's statement that it is approved for use in all Britax infant and convertible seats was quoted. review | It must not be used as an infant insert, and must not be used for children over 22 lbs. listing | - |
Also cited in the text
- Britax Head & Body Support Pillow (SKU S864900), comparison to aftermarket inserts: Several posters said it looks much like the aftermarket Snuzzler insert, which some consider unsafe, and debated whether a manufacturer-branded version is any different. review
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Written 2026-10-25T20:00:51.434Z.
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