# Rear\-facing weight limits for infant car seat bases What child weight limits do infant car seat bases list for rear\-facing use? babyark G01 Smart Base: Maker lists rear\-facing weight range as 4\-50 lbs \(1\.8\-22\.7 kg\)\. Some retailers list a different range: Some retailers list rear\-facing weight range as 4\-55 lbs \(1\.8\-25 kg\), differing from the maker's 4\-50 lbs\. Doona Latch Base: For infants 4\-35 lbs\. Compatible with the Doona Infant Car Seat and intended for rear\-facing use only\. PEG Primo Viaggio Extra Base: The maker's manual says the weight limit with LATCH is 4 to 35 lbs; one store listing says the base is suitable for children 4 to 30 lbs, so the sources disagree\. ### 1. [babyark G01 Smart Base](/products/ucp/strolleria-com/8065501691978) (sold by strolleria\.com) Maker lists rear\-facing weight range as 4\-50 lbs \(1\.8\-22\.7 kg\)\. - Weight limit: Maker lists rear\-facing weight range as 4\-50 lbs \(1\.8\-22\.7 kg\)\. (guide) - Other listing: Some retailers list rear\-facing weight range as 4\-55 lbs \(1\.8\-25 kg\), differing from the maker's 4\-50 lbs\. (listing) - Rear\-facing use: - ### 2. [Doona Latch Base](/products/ucp/strolleria-com/1292673744970) (sold by strolleria\.com) For infants 4\-35 lbs\. - Weight limit: For infants 4\-35 lbs\. (listing) - Other listing: - - Rear\-facing use: Compatible with the Doona Infant Car Seat and intended for rear\-facing use only\. (listing) ### 3. [PEG Primo Viaggio Extra Base](/products/ucp/strolleria-com/5736681345) (sold by strolleria\.com) The maker's manual says the weight limit with LATCH is 4 to 35 lbs; one store listing says the base is suitable for children 4 to 30 lbs, so the sources disagree\. - Weight limit: The maker's manual says the weight limit with LATCH is 4 to 35 lbs; one store listing says the base is suitable for children 4 to 30 lbs, so the sources disagree\. (manual) - Other listing: - - Rear\-facing use: - 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 2026-10-31T07:36:54.574Z. 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)