# Car seats that convert to a booster seat Which car seats can later convert into a booster seat for an older child? Britax Grow With You: It is a forward\-facing seat that starts as a 5\-point harness car seat and converts to a belt\-positioning booster as the child grows\. Britax Grow With You Clicktight: It is a forward\-facing combination seat that changes from a five\-point harness seat to a high\-back belt\-positioning booster; it does not rear\-face\. Evenflo All4One: The seat offers rear\-facing harness, forward\-facing harness, high\-back booster and backless booster modes and is described as growing with a child for 10 years\. Britax One4Life Slim All\-in\-One Car Seat: High\-back booster mode covers 40 to 120 lbs and 63 inches\. Britax One4Life All\-in\-One Car Seat: Belt\-positioning booster mode covers 40 to 120 lbs\. ### 1. [Britax Grow With You](/products/ucp/megababiesusa-com/8042739171582) (sold by megababiesusa\.com) It is a forward\-facing seat that starts as a 5\-point harness car seat and converts to a belt\-positioning booster as the child grows\. - Booster mode: For booster mode the harness tucks away in a few steps, and colour\-coded guides show which belt path to use\. (listing) - Installation: This listing says it installs with premium quick\-push LATCH connectors\. (listing) - Weight: The seat itself weighs 23 lbs, which is heavy for a combination seat and matters if you move it between cars\. (guide) ### 2. [Britax Grow With You Clicktight](/products/ucp/megababiesusa-com/7911440351486) (sold by megababiesusa\.com) It is a forward\-facing combination seat that changes from a five\-point harness seat to a high\-back belt\-positioning booster; it does not rear\-face\. - Booster mode: It is a forward\-facing combination seat that changes from a five\-point harness seat to a high\-back belt\-positioning booster; it does not rear\-face\. (listing) - Installation: ClickTight installation uses three steps: open the panel, route and buckle the vehicle belt, then click the panel closed\. (guide) - Weight: - ### 3. [Evenflo All4One](/products/ucp/evenflo-com/7679120900252) (sold by evenflo\.com) The seat offers rear\-facing harness, forward\-facing harness, high\-back booster and backless booster modes and is described as growing with a child for 10 years\. - Booster mode: The seat offers rear\-facing harness, forward\-facing harness, high\-back booster and backless booster modes and is described as growing with a child for 10 years\. (listing) - Installation: - - Weight: The car seat weighs 21\.6 pounds\. (guide) ### 4. [Britax One4Life Slim All\-in\-One Car Seat](/products/ucp/modernnursery-com/14905665585518) (sold by modernnursery\.com) High\-back booster mode covers 40 to 120 lbs and 63 inches\. - Booster mode: High\-back booster mode covers 40 to 120 lbs and 63 inches\. (listing) - Installation: ClickTight installation is a three\-step process: pinch to open, thread and buckle, click it closed\. (listing) - Weight: - ### 5. [Britax One4Life All\-in\-One Car Seat](/products/ucp/modernnursery-com/14905665618286) (sold by modernnursery\.com) Belt\-positioning booster mode covers 40 to 120 lbs\. - Booster mode: Belt\-positioning booster mode covers 40 to 120 lbs\. (listing) - Installation: Uses ClickTight technology for installation\. (listing) - Weight: - ## Also cited in the text - Britax Grow With You, what it is: It is a forward\-facing seat that starts as a 5\-point harness car seat and converts to a belt\-positioning booster as the child grows\. (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 2026-10-21T01:52:20.173Z. This page is published by RoboTrunk, a store built for shopping agents. The store named on this page sells the product and ships it. 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