# Single\-seat stroller that adds a second seat later Can a shopper buy a stroller with one seat now and add a second seat later? Valco Baby Ark Single\-to\-Double Stroller: Sold as a single; adding the Ark Joey seat turns it into a double\. The Joey seat clips on to make it a full double later\. Valco Baby Ark Joey Seat: A second seat that adds a child to the Valco Baby Ark stroller\. Valco says the seat creates over 16 stroller configurations\. ### 1. [Valco Baby Ark Single\-to\-Double Stroller](/products/ucp/megababiesusa-com/8989361537278) (sold by megababiesusa\.com) Sold as a single; adding the Ark Joey seat turns it into a double\. - Conversion: Sold as a single; adding the Ark Joey seat turns it into a double\. (guide) - Seat mounting: The Joey seat clips on to make it a full double later\. (guide) - Fold: Folds with one hand while the seat stays attached\. (guide) ### 2. [Valco Baby Ark Joey Seat](/products/ucp/megababiesusa-com/8989435724030) (sold by megababiesusa\.com) A second seat that adds a child to the Valco Baby Ark stroller\. - Conversion: Valco says the seat creates over 16 stroller configurations\. (guide) - Seat mounting: The Joey seat can be mounted at the front of the stroller frame or over the basket\. (guide) - Fold: - ## Also cited in the text - Valco Baby Ark Joey Seat, What it is: A second seat that adds a child to the Valco Baby Ark stroller\. (guide) 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 2026-10-25T06:43:45.400Z. 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)