# Seat pack versus complete seat unit What is the difference between buying a seat pack and buying a complete seat unit? Cybex Avi Seat Pack: The seat pack is the fabric and canopy part that, with the separately sold Cybex Sport Avi Jogging Stroller Frame, makes a complete jogging stroller\. The seat has one\-hand recline\. Cybex Zeno: It is a colour\-customisable Seat Pack for the Cybex Zeno multisport trailer, not a complete trailer\. Frame and Seat Pack are separate components; the Seat Pack alone does not include towing bars, bike hitch or ski parts\. The seat pack and frame can be bought separately or as one box, with add\-on kits for other modes\. Cybex Gazelle S Seat Unit: Cybex's US page says the seat unit attaches to the Gazelle stroller frame to carry a second child\. The second seat converts a Gazelle S from a single stroller to a double without extra adapters\. ### 1. [Cybex Avi Seat Pack](/products/ucp/megababiesusa-com/6877388472473) (sold by megababiesusa\.com) The seat pack is the fabric and canopy part that, with the separately sold Cybex Sport Avi Jogging Stroller Frame, makes a complete jogging stroller\. - What it is: The seat pack is the fabric and canopy part that, with the separately sold Cybex Sport Avi Jogging Stroller Frame, makes a complete jogging stroller\. (listing) - Scope: - - Buying option: - - Seat position: The seat has one\-hand recline\. (listing) ### 2. [Cybex Zeno](/products/ucp/megababiesusa-com/6877644980377) (sold by megababiesusa\.com) It is a colour\-customisable Seat Pack for the Cybex Zeno multisport trailer, not a complete trailer\. - What it is: It is a colour\-customisable Seat Pack for the Cybex Zeno multisport trailer, not a complete trailer\. (guide) - Scope: Frame and Seat Pack are separate components; the Seat Pack alone does not include towing bars, bike hitch or ski parts\. (review) - Buying option: The seat pack and frame can be bought separately or as one box, with add\-on kits for other modes\. (review) - Seat position: The backrest is designed for an upright sitting position\. (guide) ### 3. [Cybex Gazelle S Seat Unit / eGazelle S / Gazelle S Second Seat](/products/ucp/megababiesusa-com/7993857573118) (sold by megababiesusa\.com) Cybex's US page says the seat unit attaches to the Gazelle stroller frame to carry a second child\. - What it is: Cybex's US page says the seat unit attaches to the Gazelle stroller frame to carry a second child\. (guide) - Scope: The second seat converts a Gazelle S from a single stroller to a double without extra adapters\. (listing) - Buying option: - - Seat position: - 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 2026-10-20T08:24:03.004Z. 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)