# All\-in\-one car seats that also convert to a booster Which all\-in\-one car seats also convert into a booster for older children? Britax One4Life Slim ClickTight All\-in\-One Car Seat: All\-in\-one car seat: rear\-facing infant seat, then forward\-facing harness, then high back belt\-positioning booster Britax One4Life All\-in\-One Car Seat & Booster Combo: The listing describes rear\-facing infant, forward\-facing 5\-point harness, and high\-back belt\-positioning booster modes\. Chicco OneFit Max ClearTex All\-in\-One Car Seat: All\-in\-one car seat that the store says grows from birth through booster\. Chicco OneFit LX ClearTex All\-in\-One Car Seat: All\-in\-one car seat\. Booster setting suitable from 40 to 100 lbs\. Chicco OneFit ClearTex All\-in\-One Car Seat: Booster setting is listed for 40\-100 lbs\. ### 1. [Britax One4Life Slim ClickTight All\-in\-One Car Seat](/products/ucp/goodbuygear-com/7388221767783) (sold by goodbuygear\.com) All\-in\-one car seat: rear\-facing infant seat, then forward\-facing harness, then high back belt\-positioning booster - Booster limits: Belt\-positioning booster use is for 40\-120 pounds (listing) - Rear\-facing limits: Rear\-facing use is for children under 49 inches in height and 5\-50 pounds (listing) - Forward\-facing limits: Forward\-facing use is for 22\-65 pounds (listing) - Installation: Installs with ClickTight (listing) - Condition: - ### 2. [Britax One4Life All\-in\-One Car Seat & Booster Combo](/products/ucp/goodbuygear-com/7466350477415) (sold by goodbuygear\.com) The listing describes rear\-facing infant, forward\-facing 5\-point harness, and high\-back belt\-positioning booster modes\. - Booster limits: The listing gives a belt\-positioning booster limit of 40–120 lb\. (listing) - Rear\-facing limits: The listing gives a rear\-facing limit of under 49 inches in height and 5–50 lb\. (listing) - Forward\-facing limits: The listing gives a forward\-facing limit of 22–65 lb\. (listing) - Installation: The listing names ClickTight installation\. (listing) - Condition: The listing describes the condition as open box\. (listing) ### 3. [Chicco OneFit Max ClearTex All\-in\-One Car Seat](/products/ucp/goodbuygear-com/7788025643111) (sold by goodbuygear\.com) All\-in\-one car seat that the store says grows from birth through booster\. - Booster limits: Booster setting from 40 to 100 lbs and up to 57 inches \(the text spells it 'tp'\)\. (listing) - Rear\-facing limits: Rear facing from 5 to 40 lbs and up to 43 inches \(shown as 43 with an inch mark\)\. (listing) - Forward\-facing limits: Forward facing from 26\.5 to 65 lbs and up to 54 inches \(shown as 54 with an inch mark\)\. (listing) - Installation: - - Condition: Listed condition is open box\. (listing) ### 4. [Chicco OneFit LX ClearTex All\-in\-One Car Seat](/products/ucp/goodbuygear-com/7422616862823) (sold by goodbuygear\.com) Booster setting suitable from 40 to 100 lbs\. - Booster limits: Booster setting suitable from 40 to 100 lbs\. (listing) - Rear\-facing limits: Rear facing from 5 to 40 lbs\. (listing) - Forward\-facing limits: Forward facing from 26\.5 to 65 lbs\. (listing) - Installation: Store says it has an easy latch install; no steps or method are given\. (listing) - Condition: Listed condition is open box\. (listing) ### 5. [Chicco OneFit ClearTex All\-in\-One Car Seat](/products/ucp/goodbuygear-com/7277365985383) (sold by goodbuygear\.com) Booster setting is listed for 40\-100 lbs\. - Booster limits: Booster setting is listed for 40\-100 lbs\. (listing) - Rear\-facing limits: Rear\-facing use is listed for 5\-40 lbs\. (listing) - Forward\-facing limits: Forward\-facing use is listed for 25\-65 lbs\. (listing) - Installation: The store describes an easy LATCH install\. This is a store claim, not a tested result\. (listing) - Condition: Listed as Open Box, not new\. (listing) ## Also cited in the text - Britax One4Life All\-in\-One Car Seat & Booster Combo, Seating modes: The listing describes rear\-facing infant, forward\-facing 5\-point harness, and high\-back belt\-positioning booster modes\. (listing) - Britax One4Life Slim ClickTight All\-in\-One Car Seat, What it is: All\-in\-one car seat: rear\-facing infant seat, then forward\-facing harness, then high back belt\-positioning booster (listing) - Chicco OneFit Max ClearTex All\-in\-One Car Seat, What it is: All\-in\-one car seat that the store says grows from birth through booster\. (listing) - Chicco OneFit LX ClearTex All\-in\-One Car Seat, What it is: All\-in\-one car seat\. (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 2026-10-29T02:58:54.908Z. 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)