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Your cart is empty.Get the car seat that’s designed with your family’s real life in mind. The Cosco Kids™ MightyFit™ 65 DX Convertible Car Seat keeps your child safer in the car all the way from 5-65 pounds. It’ll keep your baby comfortably rear facing up to 40 pounds, and then transitions to forward-facing mode up to 65 pounds.Not too big and not too small, the MightyFit 65 DX is designed to be the right size. In rear-facing mode, it takes up less room, which gives parents more leg room in the front seats. The car seat will also fit three across the back seat of most vehicles, which is great for growing families.MightyFit 65 DX keeps kids safer with Side Impact Protection built right in, and a 5-point harness that adjusts easily from the front of the seat. The harness features 5 heights and 3 buckle locations so you can be sure you’re giving the best fit to your growing child.The MightyFit 65 DX Convertible Car Seat is mighty comfortable for kids and convenient for parents too. Kids will love the plush padding and deluxe materials that give them an extra comfy ride. You'll love that the fabric is both machine washable and dryer safe, making this seat super easy to clean when messes happen.If your chosen vehicle happens to be an airplane, this convertible car seat has got you covered. Certified for use on aircraft, it gives your child a familiar seat during the flight. Its compact design also makes it easier to manage through airport security checks.The MightyFit 65 DX is proudly made by Cosco Kids™ in Columbus, Indiana. Made by American families for American families.
Lizzie
Reviewed in the United States on January 13, 2025
I purchased this car seat for our little one specifically for travel, and it’s been a fantastic choice.Key FeaturesLightweight: This car seat is incredibly lightweight, which makes it perfect for travel. It’s easy to haul around without too much effort.Quick Installation: Installing it front-facing is super quick and simple, which is a big win when hopping in and out of Ubers or rental cars. I haven’t tried rear-facing, so I can’t comment on that, but the ease of front-facing installation is a huge plus for us.Spacious: The seat is very roomy, which works well for our ever-growing toddler. It’s comfortable and gives them plenty of space without feeling cramped.Ease of CleaningThe cover is easy to remove, which makes cleaning straightforward. However, since it isn’t water-resistant, you’ll need to plan for drying time if there are accidents and you don’t have access to a dryer.
Audrey Rogers
Reviewed in the United States on June 29, 2024
Ordered this to go into grandma’s car when my kids are with her. It’s super light weight. But definitely hard to secure into place. Doesn’t look very comfy, and there’s not like head rest. But at the same time, you’re getting what you pay for, so value for money, I think it’s great. It’s pretty small which is great for saving space or in smaller cars.
Customer
Reviewed in the United States on December 13, 2024
This is extremely difficult to install rear facing in some vehicles (our truck and our SUV with bench seating)- we ended up getting different car seats because it was so frustrating. We had missed the return window and found that it is easier to install rear facing in bucket seats (grandmas suv) and very easy to install forward facing in any vehicle, and works great for that (when your child is big enough). It is slim yet very comfortable, and lightweight making it good for travel (I can’t imagine lugging our Britax car seats through the airport… this Cosco seat is much better for that). Because of how difficult it was to correctly install rear facing, I would not recommend this carseat UNLESS you are looking for something forward facing.
Customer
Reviewed in the United States on November 17, 2024
I debated what car seat to get for my child once he outgrew his infant car seat and love this one. I thought it was easy to install and fits well in my car. We still have it rear facing so it does take up more room that way but my 6ft husband still fits comfortably in the front passenger seat with our little one behind him. Other people reported some type of chemical smell but ours didn’t have that. My little guy absolutely loves this car seat because it’s much roomier than his infant car seat. I would definitely buy again!
Allie
Reviewed in the United States on April 22, 2024
We bought this specifically to use on the plane ride and while on vacation. For the plane it worked perfectly (for a 14 month old). It is super light to move around and narrow so it fits in the plane seat.When we used it in a car, it wasn't great because it is a fairly low quality car seat, it sits weirdly on seats so when our son fell asleep his neck tipped over really far and it looked uncomfortable. We had to use a second item to prop the car seat backward and make it the correct angle in the car.HIGHLY recommend for plane rides & travelling!!!!! Don't recommend for daily use in a car.
Cristina
Reviewed in Mexico on September 16, 2023
Sencilla de instalar y de muy buena calidad
Patricia P.
Reviewed in Mexico on October 26, 2021
Fácil de instalar, fácil de asegurar al niño, excelente calidad10/10
Dulce
Reviewed in Mexico on August 28, 2020
Todo perfecto, de las mejores compras que he hecho.
Gaby
Reviewed in Mexico on April 19, 2020
Es ligera, la usamos no como silla de diario ni para trayectos largos. Se usa en auto de familiares.
Alma
Reviewed in Mexico on December 13, 2018
Me gusto el tamaño y lo facil de instalar. Y el color.Realmente usa un espacio considerable para poder colocar mas sillas o si el auto es muy compacto.Pero no creo que sea apta para un bebé menor de 6 meses al menos pues todavia tendria que adaptar unas sabanitas enrrolladas a los costados de mi bebé para que no quede muy flojo en el asiento.
Brandy T.
Reviewed in the United States on February 15, 2017
This seat is plush and cool, so my kids are very comfortable in it. The materials are great, the size is perfect, the safety ratings are reassuring, and the price is amazing! This is a bare bones seat, though. It has no convenience features like an easily adjustable no-rethread harness, or a level so you angle is correct. However, that is reflected the VERY affordable price (about $85) The only issue I have with this seat is that it is a huge pain to install it correctly and securely in a rear facing orientation, especially if you have deeply contoured seats.PROS:- Great rear facing height and weight limits- Higher forward facing weight limit than almost any other seat in this price range, allowing your bigger kid to stay in a harness longer. My 4 year old is almost 45 pounds, so this 65 pound forward facing limit will allow him to stay on a harness for a few more years, until he is ready for a belt positioning booster.- Relatively compact size, with straight sides that make it easier to fit next to another seat.- Comfortable, cool fabric. Won't absorb heat like a dark seat if you live somewhere hot.- Plush seat!- Machine washable cover.- Cute styling! I got the aqua blue for both my son and daughter and they love it.- Easy forward facing install.- Lightweight and easy to carry for travel.CONS:- Difficult to get a tight installation rear facing.- Does NOT fit 3 across in a Jetta.- Tedious to rethread the straps and adjust the headrest.- The button you have to push to loosen the straps is buried under the cover and not marked, so it isn't easy to find and use.All in all, this is a great basic seat for the money!I use them as travel seats and back ups in our second car. This seat won't work well for someone who needs to use it for different children, as it must be removed from the vehicle to adjust the headrest and strap heights. It also wouldn't be ideal if you were going to be moving it from one car to another frequently, as the install isn't as quick and easy as it is on models with more convenience features. But it's safe and sturdy and does its job, and you really can't beat it for this price!
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