












🚀 Travel smart, travel safe — the Diono Quantum 4 has your little one covered from day one!
The Diono Quantum 4 3-in-1 Travel System combines a rear-facing SafePlus infant car seat (4-30 lbs) with a folding stroller and toddler seat, engineered with automotive-grade steel and EPS foam for enhanced safety. Featuring premium LATCH connectors, easy installation with bubble level indicators, all-wheel suspension, and adjustable harness, this sleek Black Jet system supports newborns through toddlers up to 50 lbs, delivering versatile, secure, and smooth travel for modern families.






























| ASIN | B0D9KGH3PL |
| Age Range (Description) | Baby |
| Age Range Description | Baby |
| Assembly Instructions Description | Included |
| Best Sellers Rank | #51,124 in Baby ( See Top 100 in Baby ) #88 in Baby Stroller Travel Systems |
| Brand | Diono |
| Car Seat Weight | 9 pounds |
| Car Seat Weight Capacity Maximum | 30 pounds |
| Color | Black Jet |
| Customer Reviews | 4.6 out of 5 stars 192 Reviews |
| Fabric Type | 60% Cotton 40% Polyester |
| Folded Size | 15*19.2*35 Inches |
| Frame Color | Black Jet |
| Frame Material | Plastic |
| Front Wheel Diameter | 6.9 inches |
| Harness Feature | Adjustable |
| Harness Type | 5 Point |
| Item Dimensions L x W x H | 26.7"L x 17.2"W x 23.1"H |
| Item Weight | 36.5 pounds |
| Manufacturer | Diono |
| Material | Aluminum, Polyester |
| Material Type | Aluminum, Polyester |
| Maximum Weight Recommendation | 50 pounds |
| Model Number | 56500 |
| Number of Packs | 1 |
| Number of Wheels | 4 |
| Part Number | 56500 |
| Rear Facing Maximum Weight | 30 pounds |
| Rear Facing Minimum Weight | 4 pounds |
| Rear Facing Stroller Maximum Height | 39.4 inches |
| Seat Material | fabric |
| Seating Capacity | 2 |
| Specification Met | FMVSS |
| Stroller Seat Weight | 20.3 pounds |
| Stroller Type | Standard Stroller |
| UPC | 677726565009 |
| Unit Count | 1 Count |
K**L
Great, safe quality for price!! Would buy over and over again!!
I’m a mom of 3 and this I purchased for my 3rd because I needed something more affordable that didn’t lose its safety integrity. Glory to God I haven’t had to assess it after an accident, but when I say it feels very secure and solid I mean it that whole heartedly. I’ve had past more expensive infant seats that in the base flop at the back side and not fully secure. The level on the side is honestly an amazing touch to ensure installation is done correctly and safely. I read a review that stated it’s so top heavy with the bar down that their baby almost hit the top of their head, but I don’t find that an issue by any means. It’s lightweight, but solid in my opinion. Very very happy my decision to get this infant car seat. The stroller rolls very smoothly and is easy to open and close. My only pet peeve with the stroller is not having any type of cup holders or storage space on the handle. A place to be able to put your phone or keys so you don’t have to toss them in the bottom net basket would be nice. I’ve yet to use the stroller with the toddler seat so I’ve just been using it with the car seat itself. Overall I am very happy with my purchase and would suggest it to any mom looking for a safe, secure, lightweight, and durable infant seat!
H**N
Excellent size
Great quality, easy to rotate to any direction because it’s so smooth. Surprised by the size, and I loved the size so much. I highly recommend this Diono Quantum 4 in 1.
D**A
Stroller
So in love with this set
B**R
Perfect for 1st time mom
Great value. Super easy to put together. Bought for a 1st time mom and she's in love with it. She said it folds up super easy, walking with it is nice and smooth, and that the sun shade canopy is wonderful.
K**R
Good travel system, missing parts
Stroller and car seat are really good quality for what you’re paying. I didn’t receive the mirror or stroller organizer in my package and tried contacting support but they wanted me to just return the entire thing because they can’t just send single accessories, however I’ll just cut my losses with the missing pieces because this really is a good set up for the price!
A**T
4th baby seat!
This is my fourth kid and I have had just about all the different seats that you could, spent more money on replacing carseats, strollers as my kids grow. I am happy with the Diono travel system! It has a nice sleek design, compact and easy to set up. It came with a stroller cupholder attachment and a rear seat mirror for the car. Carseat is not heavy and I was able to hold it with my 5 lb newborn with no problem. The straps are easily adjustable, comes with the strap pads and head pad that can be moved when baby grows. Stroller frame is lightweight. It folds slim enough to not take up all the space in my car (Subaru Ascent). Simple enough to unfold and place in infant carrier or have the stroller chair already attached. Stroller does glide smoothly, I have not had any issues with mobility, steering or skidding. It does have an easy step break near the rear tire. I would recommend for all moms who are wanting light weight and simple carseats.
A**R
Chest clip bulky
After using for 3 weeks, I would not recommend for newborns. The chest clip is huge and sticks way out. It’s bulky. The car seat isn’t as good quality as what I would have wanted but it will work. The stroller part though is great.
D**A
Diono
I loved the product—it's very affordable and easy to use for carrying your baby comfortably. I would buy it again.😊
B**R
It’s an exceptional value!
We’ve been using this travel system for about three months now (purchased on sale well before the delivery) - it’s for our second kid, so we’re a little more pragmatic about build quality, value, safety, comfort, quality, and the like. This has been an excellent purchase so far - the car seat is well features, secure, solid, and easy to both install and use. The stroller is an excellent value as well - it’s not overly heavy (lighter and less cumbersome than our BabyJogger City Select from our first child), and feels very, very well put together. Yes, the hand grip is a bit inexpensive (foam, not rubber or faux leather), but I think it will be fine. The bottom basket has a relatively low weight limit (I think it states 15lbs in the manual), but we have exceeded that with groceries and beach bags and backpacks and the like without any issue. This is an exceptional value for an all-in-one system, and the little additions (stroller organizer, rear seat mirror) are excellent quality as well. Buy with confidence!
D**N
Excellent Products!
I always love this brand. It's not super expensive and very safe. Also this one is light. Excellent!
R**A
Love it
Easy to put together and pushes like a dream! The infant car seat isn’t too heavy which is an added bonus and it’s got a really sturdy stroller! Highly recommend
R**H
Perfect for short momma!
Perfect for small momma like me (5feet). Love that you don't have to keep removing baby from car seat since u can just attach it to stroller and then you go. It also includes the thing where u put your cup/milk or phone and huge storage under to put in your bag or other stuff. What I hate? The buckle is really annoying since you need to press it harder to take the buckle off. So far I'd rate it 9/10 😊 I realized this is one is enough for what I need and thankful that I didn't get the fancy ones coz I thought I won't be using it for 5-10yrs anyways to spend that much 😊.
C**U
Super
Très satisfait
Trustpilot
2 weeks ago
2 days ago