# Booster seat minimum age and weight What is the youngest age and the lowest weight that booster seats in this set are rated for? Cybex Solution T: The maker gives the age range as 4 years and older\. The booster is for children from 40 to 120 lbs\. Axkid UP: It is a high\-back booster seat for children about 4 to 12 years old, 40\-120 lbs and 43\.3\-60 in tall\. Britax Highpoint 2\-Stage: This 2\-in\-1 seat converts from a high\-back booster for 40\-120 lbs / 44\-63 inches to a backless booster for 48\-120 lbs / 46\-63 inches\. ### 1. [Cybex Solution T](/products/ucp/albeebaby-com/9578380493031) (sold by albeebaby\.com) The maker gives the age range as 4 years and older\. - Minimum age: The maker gives the age range as 4 years and older\. (guide) - Weight range: The booster is for children from 40 to 120 lbs\. (listing) - Height range: The maker gives child height limits of 38 inches to 60 inches\. (guide) ### 2. [Axkid UP](/products/ucp/albeebaby-com/9513844605159) (sold by albeebaby\.com) It is a high\-back booster seat for children about 4 to 12 years old, 40\-120 lbs and 43\.3\-60 in tall\. - Minimum age: It is a high\-back booster seat for children about 4 to 12 years old, 40\-120 lbs and 43\.3\-60 in tall\. (listing) - Weight range: It is a high\-back booster seat for children about 4 to 12 years old, 40\-120 lbs and 43\.3\-60 in tall\. (listing) - Height range: It is a high\-back booster seat for children about 4 to 12 years old, 40\-120 lbs and 43\.3\-60 in tall\. (listing) ### 3. [Britax Highpoint 2\-Stage](/products/ucp/albeebaby-com/9564460155111) (sold by albeebaby\.com) This 2\-in\-1 seat converts from a high\-back booster for 40\-120 lbs / 44\-63 inches to a backless booster for 48\-120 lbs / 46\-63 inches\. - Minimum age: - - Weight range: This 2\-in\-1 seat converts from a high\-back booster for 40\-120 lbs / 44\-63 inches to a backless booster for 48\-120 lbs / 46\-63 inches\. (guide) - Height range: This 2\-in\-1 seat converts from a high\-back booster for 40\-120 lbs / 44\-63 inches to a backless booster for 48\-120 lbs / 46\-63 inches\. (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 2026-10-23T09:22:08.301Z. 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)