# Car seat adapters for twins or a double stroller Which car seat adapter works for twins or for a double stroller? Chicco Corso Flex Infant Car Seat Adapter/Basket: This is a second Infant Car Seat Adapter/Basket for the Chicco Corso Flex Convertible Stroller, allowing two Chicco infant car seats to be accommodated\. Veer Switchback Infant Car Seat Adapter: Double mode with a Switchback Seat requires lower post adapters and upper riser adapters, both sold separately\. PEG Ypsi Double Adapter: The set includes the upper and lower adapters needed to create space between the main stroller seat and lower Companion Seat\. Bugaboo Kangaroo Car Seat adapters: A store listing says an extra set is for twins and that the stroller comes with one set\. ### 1. [Chicco Corso Flex Infant Car Seat Adapter/Basket](/products/ucp/strolleria-com/8063354863690) (sold by strolleria\.com) This is a second Infant Car Seat Adapter/Basket for the Chicco Corso Flex Convertible Stroller, allowing two Chicco infant car seats to be accommodated\. - Twin setup: This is a second Infant Car Seat Adapter/Basket for the Chicco Corso Flex Convertible Stroller, allowing two Chicco infant car seats to be accommodated\. (listing) - Seat compatibility: Compatible with all Chicco infant car seats\. (listing) - Mounting: Mounts into the upper or lower position of the Corso Flex Stroller, parent\-facing only\. (guide) - Extra parts: - ### 2. [Veer Switchback Infant Car Seat Adapter](/products/ucp/anbbaby-com/9264667492638) (sold by anbbaby\.com) Double mode with a Switchback Seat requires lower post adapters and upper riser adapters, both sold separately\. - Twin setup: Before installing a car seat in double mode, the &Roll handle must be lowered to its lowest position\. (manual) - Seat compatibility: Compatible Britax models are B\-Safe 35, B\-Safe 35 Elite, B\-Safe Ultra, B\-Safe Gen2, B\-Safe Gen2 FlexFit, B\-Safe Gen2 FlexFit\+, Endeavour and Chaperone\. (manual) - Mounting: - - Extra parts: Double mode with a Switchback Seat requires lower post adapters and upper riser adapters, both sold separately\. (manual) ### 3. [PEG Ypsi Double Adapter](/products/ucp/strolleria-com/4491391533130) (sold by strolleria\.com) The set includes the upper and lower adapters needed to create space between the main stroller seat and lower Companion Seat\. - Twin setup: The set includes the upper and lower adapters needed to create space between the main stroller seat and lower Companion Seat\. (guide) - Seat compatibility: The double adapter set attaches a Companion Seat to a Peg Perego YPSI stroller or Agio Z4\. (guide) - Mounting: Store data says to install once with no need to remove them again\. (listing) - Extra parts: Store data says it includes both the upper and lower set of adapters\. (listing) ### 4. [Bugaboo Kangaroo Car Seat adapters](/products/ucp/strolleria-com/7767502553162) (sold by strolleria\.com) A store listing says an extra set is for twins and that the stroller comes with one set\. - Twin setup: A store listing says an extra set is for twins and that the stroller comes with one set\. (listing) - Seat compatibility: - - Mounting: - - Extra parts: A store listing says the adapters are included in the Kangaroo Box\. (listing) Every value in the table is a fact RoboTrunk checked, linked to the page it came from\. A dash means no checked fact fills that cell\. Prices and stock change, so this page prints neither: each product name links to its RoboTrunk page, which shows them live\. Written 2026-10-16T15:14:34.873Z. This page is published by RoboTrunk, a store built for shopping agents. The store named on this page sells the product and ships it. RoboTrunk is not the seller and never holds the money. Buying works in one path. RoboTrunk's tools prepare a checkout at that store, then hand back a short-lived link. The person approves the total; once RoboTrunk has checked the store's total against it, the person is given the checkout link to tap in their own browser, or, if the person prefers and gives permission, their agent may open the link and finish there, and payment always happens on the store's own checkout page. RoboTrunk never takes the payment or sees a card. Where the rest of this site is: - /agent/story.md is what RoboTrunk is and how it works, in full. - /agent/tools.json is every tool, its arguments and its answers. - /agent/merchants is every store you can buy from through RoboTrunk. - /products/ucp is every store's indexed products. - /products/search is one search across every store, in plain words. - [What RoboTrunk is](/agent/story.md) - [Every tool, in your browser through WebMCP](/agent) - [The tools and how to call them](/agent/tools.json) - [The stores you can buy from](/agent/merchants) - [Every store's products](/products/ucp) - [Search every store at once](/products/search)