# Lightest convertible car seats for moving between cars

Which convertible car seats weigh the least, for carrying them between vehicles?

PEG Perego Primo Viaggio Kinetic Convertible Car Seat: Store data gives dimensions of 26\.25 by 18\.75 by 25\.75 inches and a product weight of 24\.4 lbs\. The video names the seat as very heavy, difficult to recline, and lacking a leveler as cons, and rates it 4 out of 5\. Britax Poplar S ClickTight Convertible Car Seat: It states the S adds the ReboundReduce bar, a removable head pad and an upper\-body support pillow over the standard Poplar, and weighs 28 lb against 27\.2 lb, with no wider shell or higher child\-weight limit\. Romer\-dc\-dc Veni Convertible Car Seat: Measured weight 28\.25 lb\. Cybex \(listed by the store as Cybex\-dc\) Sirona S: Their table lists the seat at 30\.4 lbs, height limit 49 in, dimensions 30″L x 19″W x 24″H, two cup holders, portability 7/10 as bulky and heavy duty, a 10\-year lifespan and no airplane use\. Cybex \(sold as Cybex\-dc\) Callisto G 360: The assembled seat weighs 35 lbs\. Cybex Callisto T 360: The car seat weighs 35 lb\.

### 1. [PEG Perego Primo Viaggio Kinetic Convertible Car Seat](/products/ucp/albeebaby-com/9722098155751) (sold by albeebaby\.com)

Store data gives dimensions of 26\.25 by 18\.75 by 25\.75 inches and a product weight of 24\.4 lbs\.

- Weight: Store data gives dimensions of 26\.25 by 18\.75 by 25\.75 inches and a product weight of 24\.4 lbs\. (listing) <https://dd1dfe-a3.myshopify.com/products.json>
- Width: -

### 2. [Britax Poplar S ClickTight Convertible Car Seat](/products/ucp/albeebaby-com/9564453077223) (sold by albeebaby\.com)

It states the S adds the ReboundReduce bar, a removable head pad and an upper\-body support pillow over the standard Poplar, and weighs 28 lb against 27\.2 lb, with no wider shell or higher child\-weight limit\.

- Weight: It states the S adds the ReboundReduce bar, a removable head pad and an upper\-body support pillow over the standard Poplar, and weighs 28 lb against 27\.2 lb, with no wider shell or higher child\-weight limit\. (blog) <https://capitalkidz.com/blogs/news/britax-poplar-s-review>
- Width: The Poplar and Poplar S are described as among the skinniest car seats on the market, at 17 inches wide externally\. (blog) <https://www.thecarseatpros.com/blog/poplarreview>

### 3. [Romer\-dc\-dc Veni Convertible Car Seat](/products/ucp/albeebaby-com/9564461170919) (sold by albeebaby\.com)

Measured weight 28\.25 lb\.

- Weight: Measured weight 28\.25 lb\. (review) <https://www.youtube.com/watch?v=E1cpg7RULdo>
- Width: Measured rear\-facing length 28\.75 in, height 23 in, width 17 in; forward\-facing at maximum recline 27 in long, 22 in high, 17 in wide; add up to 7 in height if the headrest is fully extended; cup holders add 1\.5 in to either side\. (review) <https://www.youtube.com/watch?v=E1cpg7RULdo>

### 4. [CYBEX \(listed by the store as Cybex\-dc\) Sirona S](/products/ucp/albeebaby-com/9565344956647) (sold by albeebaby\.com)

Their table lists the seat at 30\.4 lbs, height limit 49 in, dimensions 30″L x 19″W x 24″H, two cup holders, portability 7/10 as bulky and heavy duty, a 10\-year lifespan and no airplane use\.

- Weight: Their table lists the seat at 30\.4 lbs, height limit 49 in, dimensions 30″L x 19″W x 24″H, two cup holders, portability 7/10 as bulky and heavy duty, a 10\-year lifespan and no airplane use\. (review) <https://carseaton.com/cybex-sirona-s-review/>
- Width: The seat measures 24\.5 inches long, 19 inches wide and 25\.5 inches high\. (guide) <https://dd1dfe-a3.myshopify.com/products/cybex-open-box-sirona-s-rotating-convertible-car-seat-with-load-leg-and-sensorsafe-indigo-blue>

### 5. [Cybex \(sold as Cybex\-dc\) Callisto G 360](/products/ucp/albeebaby-com/9722094616807) (sold by albeebaby\.com)

The assembled seat weighs 35 lbs\.

- Weight: The assembled seat weighs 35 lbs\. (listing) <https://dd1dfe-a3.myshopify.com/products.json>
- Width: Assembled, the seat measures 21\.7 in long, 18\.7 in wide and 25\.5 in high\. (listing) <https://dd1dfe-a3.myshopify.com/products.json>

### 6. [Cybex Callisto T 360](/products/ucp/albeebaby-com/9722095272167) (sold by albeebaby\.com)

The car seat weighs 35 lb\.

- Weight: The car seat weighs 35 lb\. (listing) <https://dd1dfe-a3.myshopify.com/products.json>
- Width: Assembled measurements are 21\.7 in long, 19\.5 in wide, and 25\.5 in high\. (listing) <https://dd1dfe-a3.myshopify.com/products.json>

## Also cited in the text

- PEG Perego Primo Viaggio Kinetic Convertible Car Seat, cons: The video names the seat as very heavy, difficult to recline, and lacking a leveler as cons, and rates it 4 out of 5\. (review) <https://www.youtube.com/watch?v=tJuu-xvLn8U>

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Written 2026-10-28T07:20:33.817Z.

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