Convertible car seats with a top tether
Which convertible car seats include a top tether, and how is the tether attached?
PEG Perego Primo Viaggio Kinetic Convertible Car Seat: The maximum child weight for top tether use is 65 lbs. Cybex (sold as Cybex-dc) Callisto G 360: In independent simulated frontal crash tests with a forward-facing 6-year-old dummy installed with lap-and-shoulder belt plus top tether, the tether system released before the head reached its most forward position in all three tests — the tether hook broke twice and the sled's tether anchor broke once; in a weighted 6-year-old dummy test the tether strap sheared off after the double webbing section. Technicians describe it as a true one-time install with the seat belt because the tether strap stays attached in both directions, with a tall 18-inch top harness height, a belt tensioner and an anti-rebound base design; you still need to lock the seatbelt at the retractor.
| Product | Why | Top tether limit | Tether attachment |
|---|---|---|---|
| 1. PEG Perego Primo Viaggio Kinetic Convertible Car Seat sold by albeebaby.com | The maximum child weight for top tether use is 65 lbs. | The maximum child weight for top tether use is 65 lbs. manual | - |
| 2. Cybex (sold as Cybex-dc) Callisto G 360 sold by albeebaby.com | Technicians describe it as a true one-time install with the seat belt because the tether strap stays attached in both directions, with a tall 18-inch top harness height, a belt tensioner and an anti-rebound base design; you still need to lock the seatbelt at the retractor. | - | In independent simulated frontal crash tests with a forward-facing 6-year-old dummy installed with lap-and-shoulder belt plus top tether, the tether system released before the head reached its most forward position in all three tests — the tether hook broke twice and the sled's tether anchor broke once; in a weighted 6-year-old dummy test the tether strap sheared off after the double webbing section. review |
Also cited in the text
- Cybex (sold as Cybex-dc) Callisto G 360, installation: Technicians describe it as a true one-time install with the seat belt because the tether strap stays attached in both directions, with a tall 18-inch top harness height, a belt tensioner and an anti-rebound base design; you still need to lock the seatbelt at the retractor. blog
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Written 2026-10-25T21:48:49.869Z.
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