Sarah Mahan
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Evenflo SecureKid 300 Car Seat Review

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Evenflo SecureKid 300

Evenflo SecureKid 300

The Evenflo SecureKid 300 harness booster seat is an easy-to-use lightweight seat that can grow with your child. I purchased this seat in August 2013 for my 2-year-old daughter. While most 2-year-olds are still too small for a booster, she is already over 40 pounds and taller than 40 inches—the size of many 4-year-olds.

Evenflo SecureKid Evelyn

My 2 1/2 –year-old sitting in the Evenflo SecureKid 300. Believe me, she really is a happy child despite what her face says.

I settled on this particular harnessed booster because of its high harness weight limit—65 pounds. It is also relatively narrow, measuring only 19” wide. Another major factor in my decision was the price. I was able to buy this for less than $100. All car seats and boosters have to meet minimum federal safety standards, so purchasing a less expensive option does not sacrifice safety. The Evenflo SecureKid 300 is even rated as a Best Bet by the Insurance Institute for Highway Safety.

What I really like about this seat is the fact that my daughter can climb into it herself, which she loves. She even helps buckle herself in. I do the buckle and she does the chest clip. I also love, love, love the latch system on this seat. Evenflo calls it the SureLatch Connector system. All you have to do is push the clip onto the latch in your car and it automatically locks in place. And to unhook it, just press the red button and pull. This is so much easier than the standard hooks.

Evenflo SecureKid 300 Latch

Evenflo SureLatch Connector

Another bonus is the two cup holders. These have an elastic band in them to help hold the cups in place.

SecureKid Cup Holders

Elastic bands to hold your child’s cup in place in the Evenflo SecureKid 300.

The Evenflo SecureKid 300 is highly adjustable. It has four top harness positions, an adjustable headrest, and the crotch buckle has two available positions, as well. After your child weighs 65 pounds, you can continue to use the seat until they weigh 110 pounds or are 57 inches tall. Just remove the harness straps and use it as a belt-positioning booster. I have not used this seat in this way yet; however, I like how the red highlights on the seat show you where the belt is supposed to go. Also, based on what I can see, it seems the seat is designed to keep the belt securely in place.

My least favorite thing about this seat is that the harness straps are a bit too close together at the neck. My daughter frequently says it hurts. I did buy strap covers (not in the pictures) and that seems to help. Another issue is the front adjusting strap is a bit short. We still have two harness positions to go and there isn’t much slack left.

SecureKid Adjusting Strap

This is how much slack is left when the straps are adjusted to fit my daughter.

Based on my family’s budget and car requirements, this was the best seat option for us. While the Evenflo SecureKid 300 does have some minor flaws, I would buy it again, and I would recommend it to friends and family. If you need tips on how to correctly install a booster or car seat, read this all-inclusive guide to car seat safety. You can also read my reviews for the Graco My Ride 65 and 70 and the Evenflo Tribute.


  • SureLatch Connector system
  • High weight limit for harness
  • Adjustable headrest
  • Light weight
  • Narrow
  • 2 cup holders
  • Affordable


  • Short front adjustment strap
  • Neck straps too close together

  • Sarah MahanStaff Writer

    Sarah Mahan currently lives in the Bicycle Capital of the Midwest, Xenia, Ohio, with her band director husband and two darling daughters. She loves all things French and the written word. Sarah writes professionally for the automotive industry. While her forte in cars focuses on new vehicle technology and family-friendly features, she is developing a love for all things fast, maybe in an attempt to get to know her wild side. See more articles by Sarah.

  • Beth Warren

    Hello. Thank you for taking the time to post your review of the Evenflo SecureKid 300. Your profile doesn’t state if you’re a certified child passenger safety technician or instructor, so as I am certified as an instructor, I would like to point out a couple things in the review and one of the photos.

    The photo of your daughter sitting in the seat: the location of the harness retainer clip is too high on her chest, it should be at armpit level – not at the top of her chest.

    In the review you stated you remedied the straps rubbing on her neck by purchasing and adding on harness covers. Unless covers are made by each safety seat manufacturer for their own products – they are usually not allowed to be added to any seat. Double check the owner’s manual for your seat to find out if Evenflo allows the addition of any product not manufactured by them to be added to one of their seats. If not, then using the item invalidats the warranty of the seat, and in many states, adding products not aloowed to seats is also against state law.

    Next, about installing the seat using the lower anchor system, SureLatch Connectors. These connectors have a weight limit of 48 pounds (child’s weight, at this time – however this will change in 2014 to a combined weight of the child + weight of safety seat = 65 pounds or less). Once your child reaches the weight limit of the lower connectors – you are mandated to discontinue their use for installation and use the vehicle safety belt for proper installation.

    Thank you.