They say: "Our VISTA allows for multiple second seat configurations. The Lower Adaptors for VISTA models 2015-later creates more space between your primary and secondary seats.
- Quick, no-tools attachment
- Colour-coded dot indicators to ensure proper installment
- Stroller folds with the adaptors on
- Compatible with VISTA models 2015-later, and Carrycot models 2015-later"
Please note that the RumbleSeat (sold separately) comes with its own adaptors and configurations may also require the use of VISTA Upper Adaptors.