The Gazelle S Second Seat Unit easily attaches to the Gazelle S pushchair frame (sold separately), allowing you to carry a second child or twins in equal comfort. Key Features: One-Pull Harness - Secure your child in seconds. One hand is all you need to fit the harness to the perfect form-hugging position. Ergonomic Lie-Flat Position - Ready to use from birth, the huge Gazelle S seat unit is...