The 6 best Convertible car seats for babies and children in 2021

Do you want to know which are the best car seats for children and babies that cost relatively cheap in 2021? They are really cheap. We have selected a car seat model from Play, from Piku, ZOE & JOE, Britax Römer, and Foppapedretti along with a perfect booster seat for plane travel from BubbleBum. Hard choice. The car seat for our children is one of the most important purchases that we will have to make during the first years.

Who are these car seats under 300 dollars recommended for?
For less than 300 dollars, obviously, we are going to have to make certain concessions.

All comply with current safety regulations (ECE R44 / 04), but they are probably less comfortable, the cover is tarnished or they do not have ISOFIX, something that will have between 150 and 300 car seats.

These car seats, which we suggest in this article, are perfect for short trips, So analyze the usage you are going to give them. If you mainly use cars in the city, So they are the best option. If you do not stop traveling by road and travel many kilometers, So it may be better to buy a more expensive and more comfortable chair.

There are 4 models that will have to be fastened with a car belt, something that also considers safety regulations. They belong to groups I, II, III (9 to 36 kg), from about 1 to 12 years of age, They therefore cover all stages of the child’s development except the first year of life. Then there is one model which has ISOFIX and another which is only booster seat.

1 Graco Extend2Fit Convertible Car Seat

Installation TypeLATCH
Item Dimensions LxWxH19.2 x 22.1 x 25.2 inches
Item Weight19.25 Pounds
Maximum weight recommendation65 Pounds
Minimum Weight Recommendation4 Pounds
Maximum Height Recommendation49 Inches
Rear Facing Maximum Weight50 Pounds

Probably the best chair of the three but also the most expensive. A car seat for the 0-1-2 group will serve us from 0 kg to 25 kg (from 0 months to 7 years). It weighs 9 kg, the cover is machine washable and a 5-point harness is provided with a central adjuster. The only major downside is that it does not contain ISOFIX. It can resume especially for group 0 (then slightly less). It is positioned in the direction of travel of the vehicle. First, the child may “lose” a little in such a chair, But in no time, it resolves. Its assembly with the car belt is very simple. It has a height-adjustable headrest and belt height adjuster.

2 Evenflo EveryFit 4-in-1 Convertible Car Seat

Installation TypeLATCH
Item Dimensions LxWxH22.5 x 19 x 32.5 inches
Item Weight19 Pounds
Maximum weight recommendation120 Pounds
Minimum Weight Recommendation4 Pounds
Maximum Height Recommendation57 Inches
Rear Facing Maximum Weight40 Pounds
Forward Facing Maximum Weight120 Pounds

Tested and approved with ECE R 44/04 regulations, I + ll + III group for children from 9 to 36 kg. It is quite comfortable: its backrest and headrest are adjustable in height. It is easily removable and washable at 30º degrees. In group stage 2/3 the harness was to be removed and the seat and child secured to the vehicle with a seat belt. It is fastened with seat belts and does not contain ISOFIX. It weighs 4Kg and can be easily placed in the trunk. Perfect as an assistant chair and for short trips.

3 Diono Monterey XT Latch, 2-in-1 Belt Positioning Booster Seat with Expandable Height/Width, Gray Dark

Installation TypeLatch
ColorGrey dark
Item Dimensions LxWxH16 x 20 x 26 inches
Item Weight14.29 Pounds
Maximum weight recommendation120 Pounds
Minimum Weight Recommendation40 Pound

5-position height-adjustable headrest with triple padded cover with group 1-2-3 car seat Independent 5-point harness system with central adjustment. Removable and washable cover and easy installation. They also do not have ISOFIX (it works with car seat belts) And it does not recur. It weighs only 4 kg and can be slightly stiff, But it is perfect for short rides.

4 Chicco MyFit Harness + Booster Car Seat, Fathom

Installation TypeLATCH
Item Dimensions LxWxH24.5 x 20.5 x 26.25 inches
Item Weight25 Pounds
Maximum weight recommendation100 Pounds
Harness Type5-Point
Minimum Weight Recommendation25 Pounds

The brand can be trusted, and this model is very cheap. It is available in various colors, all are quite cheap. It does not have Isofix, it is installed via seat belt. Headrest is easy to lift and lower And it is very comfortable, Which is perfect for taking your child to take a nap on a car trip. It is a bit harsh, so it is better to use it on short trips. It can be used from the age of 9 months.

5 KidFit Zip Plus 2-in-1 Belt Positioning Booster Car Seat – Seascape

Installation TypeLATCH
Item Dimensions LxWxH16.5 x 18.75 x 32.75 inches
Item Weight10.2 Pounds
Maximum weight recommendation110 Pounds
Minimum Weight Recommendation40 Pounds
Maximum Height Recommendation57 Inches
Forward Facing Minimum Weight40 Pounds

A car seat for older children, in case you want to change seats or do not like seats that cover all groups.

It is installed easily and its manufacturing quality is very good. It has ISOFIX. The headrest is adjustable and the cover is machine washable. You must wear a car seat belt for the journey. It is quite small and narrow compared to other models. It is quite comfortable and the padding is perfect for longer rides.

6 Graco Affix Highback Booster Seat with Latch System

Installation TypeLATCH
Item Dimensions LxWxH15.5 x 16.5 x 16.75 inches
Item Weight9.6 Pounds
Maximum weight recommendation100 Pounds
Minimum Height Recommendation43 Inches
Minimum Weight Recommendation40 Pounds
Age Range (Description)More than 4 years

An inflatable car seat perfect to take on a plane trip and then take a rental car. Or as an auxiliary seat for grandparents or relatives. You can use it with children weighing 15kg.

If you have gone on a trip and then rented a car, you may have noticed that car rental companies charge you a lot to rent a car seat for children. With this invention you are going to save a lot of money.

You can carry it deflated in your suitcase (it is only 33 cm wide and weighs only 500 grams) and then inflate it in a few seconds. It is fully approved.

Final tips to buy the best car seat for your child

  • It is better not to buy a second-hand car seat since we never know what wear it has had
  • Install the chair according to the manufacturer’s instructions
  • Car seats should not be used where there are front airbags (better in the back seat)
  • Check before each trip that the chair is correctly positioned: once fixed, the chair should not move forward or to the sides

Until when do you have to use child restraint systems? Regulation ECE R44 / 04, and the i-Size

You have to look for a tag of this style and interpret all its data:

  1. Look at the last two figures: they must end in 04 (latest version) or 03.
  2.  Universal means that the chair is approved for installation in all vehicles.
  3. The homologation of weight (group). If the letter Y is added here, it means that the chair has a 5-point harness system with a crotch strap.
  4. European homologation indicator.
  5. Indicate the country in which the homologation was obtained: 1 = 2 = Germany, France, Italy …
  6. Homologation number. The first two numbers (04) show that the version of the chair has been approved (ECE R 44/04 standard).
  7. Unique number assigned to your child car seat
  8. Week and year of production
  9. The item from the manufacturer’s reference number.
  10. EAN code
  11. BAR code
  12. Manufacturer’s name

Its use reduces injuries by 75% in the event of a claim. They have to be used until the age of 12 or until they reach 1.35 meters in height.

Groups of child car seats:

  • 0+: From birth to 13 kg (From 0 to 12 months)
  • 0 + / 1: From birth to 18 kg (From 0 to 4 years approximately)
  • 1: From 9 kg to 18 kg (From 9 months to 4 years approximately)
  • 1/2/3: From 9 kg to 36 kg (From 9 months to 12 years approximately)
  • 2/3: 15 kg to 36 kg (From 4 years to 12 years)

We must also pay attention to the new “i-Size” or ECE R129 regulation that came into force in 2013 and that adds new safety factors to the previous regulation. 

In this case, car seats for children are classified according to the height of the child (it is the manufacturer who has to indicate what the height range of their seat is). In addition, seats must have ISOFIX as long as the child uses a harness.

  • Extends the time during which the child must travel against the direction of travel of the vehicle: with the i-Size approval, children are allowed to go in the opposite direction of the vehicle up to 15 months.
  • Better probability of correct anchoring of the seat to the car, since seats approved under the i-Size standard, can only be installed with the ISOFIX system.
  • It establishes minimum dimensions for vehicle seats and also maximum dimensions for children’s car seats.
  • Better safety inside and frontal impacts, as dummy tests are performed with more advanced injury criteria.

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