# Booster seat lifespan and replacement How long does a booster seat last before it needs to be replaced? No checked fact states a service life or a replacement point for these boosters\. The closest facts give production dates and size ranges only\. Britax Skyline: Britax lists the Skyline 2\-Stage Booster as made from 10/21/19 to present\. Britax UpNGo: The seat is intended for children weighing 18\.1\-54\.4 kg / 40\-120 lb and measuring 116\.8\-160 cm / 46\-63 in\. ### 1. [Britax UpNGo](/products/ucp/lovemedobaby-com/7538921570438) (sold by lovemedobaby\.com) The seat is intended for children weighing 18\.1\-54\.4 kg / 40\-120 lb and measuring 116\.8\-160 cm / 46\-63 in\. - Size range: The seat is intended for children weighing 18\.1\-54\.4 kg / 40\-120 lb and measuring 116\.8\-160 cm / 46\-63 in\. (guide) - Production dates: - ### 2. [Britax Skyline](/products/ucp/lovemedobaby-com/6596328226950) (sold by lovemedobaby\.com) Britax lists the Skyline 2\-Stage Booster as made from 10/21/19 to present\. - Size range: In NHTSA's Car Seat Ease of Use Ratings the Britax Skyline booster \(model E1C269H, made 2021\-01\-21, 40–120 lb, 44–63 in\) scored 4 of 5 overall in booster mode, with securing the child 3/5, labels 3/5, vehicle installation features 5/5 and instructions 4/5; these are ease\-of\-use ratings, not crash\-test results, listed at https://api\.nhtsa\.gov/childSeats?dataSet=ratings\. (guide) - Production dates: Britax lists the Skyline 2\-Stage Booster as made from 10/21/19 to present\. (manual) 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 2026-10-23T08:17:20.195Z. 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)