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Graco® TrioGrow™ SnugLock® LX 3-in-1 Car Seat in Sonic

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Graco® TrioGrow™ SnugLock® LX 3-in-1 Car Seat in Sonic. View a larger version of this product image.
Graco® TrioGrow™ SnugLock® LX 3-in-1 Car Seat in Sonic. View a larger version of this product image.
Graco® TrioGrow™ SnugLock® LX 3-in-1 Car Seat in Sonic. View a larger version of this product image.
Graco® TrioGrow™ SnugLock® LX 3-in-1 Car Seat in Sonic. View a larger version of this product image.
Graco® TrioGrow™ SnugLock® LX 3-in-1 Car Seat in Sonic. View a larger version of this product image.
Graco® TrioGrow™ SnugLock® LX 3-in-1 Car Seat in Sonic. View a larger version of this product image.
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about the product

Adapting to your growing child, the Graco TrioGrow SnugLock LX 3-in-1 Car Seat provides years of seating safety. Keep your child comfortable with 10 headrest positions and ProtectPlus.
  • Safely seats children 5 lb. and up
  • Safely seats children up to 100 lb.
  • Supports children up to 1" below handle for rear facing, 49" for forward facing and 57" for highback booster
  • 5-point adjustable harness
  • No-rethread harness adjustability - adjust the headrest and harness in one motion
  • 3-in-1 car seat grows with your child from rear-facing harness, to forward-facing harness, to high back booster
  • SnugLock Technology installs in less than one minute using vehicle seat belt or LATCH
  • Graco ProtectPlus Engineered: a combination of the most rigorous crash tests that helps to protect your little one in frontal, side, rear & rollover crashes, and additional testing based on the New Car Assessment Program and for extreme car interior temperatures
  • Graco’s exclusive InRight LATCH attachment provides an easy, one-second attachment with an audible click to help ensure secure installation
  • Keep your child comfortable with 10 headrest positions and removable head and body infant inserts
  • 6 recline positions help with installation and ensure a comfy ride
  • Rapid Remove machine-washable cover removes in 60 seconds without uninstalling the seat
  • Measures 19.25" L x 22.5" W x 25.5" H
  • Car seat weighs 21.5 lb.
  • 1-year limited manufacturer's warranty
  • Imported
  • Model 2087706 Sonic; 2086490 Everett; 2087707 Thatcher
  • skuId: 68299477


Number of Recline Positions
"Seat tilting adjustments dependent on size and comfort of child"
Number of Head Rest Positions
Car Seat Installation Type
LATCH system
Car Seat Harness Features
Harness storage pockets
Car Seat Features
Easy to remove fabrics, Harness storage, Level indicator, Removable infant insert included, Side impact protection
Car Seat Comfort Features
Adjustable head support, Adjustable recline, Cup holder, Strap covers included
Part or Model Number
1 year limited warranty


Product Depth in
22.5, 19.25
Product Width in
19.25, 22.5
Product Height in
Rear Facing Maximum Weight Capacity lb
Rear Facing Minimum Weight Capacity lb
Forward Facing Maximum Height Capacity in
Forward Facing Minimum Height Capacity in
Forward Facing Maximum Weight Capacity lb
Forward Facing Minimum Weight Capacity lb

shipping & returns

Please be aware we've temporarily extended our delivery time frames due to Covid 19 precautions at our facilities. The extended time frames will be reflected in the estimated delivery date shown at checkout.

Free Standard Shipping on Orders Over $39

Free Standard Shipping with any online purchase of $39 (merchandise subtotal excludes store pick up items; merchandise subtotal is calculated before sales tax, before gift wrap charges, and after any discounts or coupons). Truck delivery and shipping surcharges on over-sized or extremely heavy items will still apply (these charges are indicated on the appropriate product information pages and will be displayed in the shipping subtotal of your order). Orders typically arrive within 3-6 business days. Items shipped directly from the vendor or to Alaska and Hawaii have longer delivery lead times. This offer does not apply to Alaska, Hawaii, Puerto Rico or Business Direct orders.

See Full Shipping & Returns Policy

Ratings & Reviews

Ratings Snapshot

147 reviews ·

Would Recommend

125 recommendations





Ease of Use


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Most Helpful Positive Review
Easiest car seat I have EVER used!! ErinMommy ·
Recommended Not Recommended

I was SUPER hesitant to buy this car seat as it was brand new on the market, had zero reviews, and I wasn't able to see it in person anywhere. I'm the type of person who reads hundreds of reviews and mulls over my options for a long before making a decision. As a pediatric trauma nurse, I realize how extremely important a good car seat, properly installed, with a proper fit is. However, this car seat had EVERYTHING that I was looking for, so I decided to give it a try. I am SO GLAD that I did. It is literally the easiest seat to install EVER. The fabric is super soft, and doesn't seem to get too hot. I was able to see the Graco 4Ever at a local retailer, and I will say that this seat is nearly identical in size and overall design. I called Graco to get the size specifications in comparison to the 4 Ever, and they were super similar. The best part about this seat is the SnugLock feature that serves as an internal lock-off for BOTH forward and rear facing positions. This was the only seat that I was able to find with this feature, and it is so incredibly easy to use. We can move this seat between our cars in less than 5 minutes and get a rock solid install. We are using it with our 7lb newborn. We have other seats for our 3 older kids, and I am definitely buying a second one of these for our 2 year old when his seat expires next year. Looking forward to seeing other reviews for this product soon, and so glad I found this awesome seat!

Most Helpful Critical Review
I just received seat. Very nice but one problem Tlmadden40 ·
Recommended Not Recommended

I just bought this seat as I like Graco seats. This is the second Graco I've purchased in the last three months. I like the seat cover and overall look of the seat. So easy to install. One issue, the crotch strap is too short so its tight on my 5 mth old grandson. He is 19 lbs. Very thick thighs. I'm worried it will be too tight as he grows. I had to remove infant inserts and move crotch buckle to outer slot. What happens as he gets bigger. My 4ever DLX crotch strap is just fine. May have to return this seat. I am disappointed about this one issue which is important.


Thank you for your feedback. We apologize for the inconvenience you have experienced with your seat! We see that you were able to get in touch with one of our CPSTs directly for assistance. Please feel free to reaching out if you need further assistance! Thank you for your time!

Customer Reviews

Showing 8 out of 147 reviews



Do not buy Kavila ·
Recommended Not Recommended

I bought this thinking how great it would be to use for years to come. If you have a latch system it installs fine, but it did not work well with just a seat belt. I'm most unhappy with the positioning. I put my 10 month old in it and there was a gap and pushed his chin to his chest. So I tried it for my 2 year old and the same thing happened. It's too angled so their backs didn't match up and made them slump. I didn't get to return it in the time frame or else I would have. I'm now stuck with a car seat I can't use and I'm extremely unhappy. I would not recommend this product to anyone.

Ease of Use

Uncomfortable RachD ·
Recommended Not Recommended

My 10 month old cannot get comfortable in this seat. There is just something off. She leans far forward, sits awkward with or without the padding. She is so uncomfortable with her head position she can’t fall asleep because her head falls forward and her but slides forward she sits in almost a C shape in the seat. There is just something off about this seat, we have tried a couple different reclined positions and nothing seems like she sits in it correctly. Very disappointing as this is my third child and we have always happily stood by graco but I’m very unsatisfied with this seat.

Ease of Use

Good seat but... thrice62 ·
Recommended Not Recommended

Everything on this seat is good, except for the crotch area it is too short. I adjusted it to the outer location but it barely sticks out and I assume within the year it will become useless for my 1 1/2 yr old son. This is my 2nd Graco seat I have bought within the last 4 months but this crotch problem needs to be fixed it won't last long for my kid. I should have bought the deluxe seat I already had that one was perfect.

Ease of Use

Love it! Faith00 ·
Recommended Not Recommended

This seat was sent to us as a replacement for my 4ever DLX and I like this one much better! The snuglock feature is amazing. It doesn't take much effort to get a great install. I also really like how sleek the black color looks, it looks fancy even though it's on the cheaper side. I'll probably order this one again in the future!

Ease of Use

Great Carseat Madison ·
Recommended Not Recommended

After EXTENSIVE research, my husband and I agreed on this car seat for our baby girl. It's highly rated by consumer reports and it has nice washable fabric that is easy to take apart and put back together. The safety ratings while using LATCH and seatbelt to secure while front and rear facing were what did it for us. We like the cupholders. I practiced installing in the back seat of my Hyundai Elantra front and rear facing, and I practiced installing in my husband's Toyota RAV4 front and rear facing. The design of this car seat makes it easy to make sure things are fully secured. Our baby girl seems extremely comfortable. The only negative that I can see so far is that where the shoulder straps buckle into the crotch buckle leaves a small divot in her upper thighs. She doesn't seem concerned and I'm not really either.



Ease of Use



Very comfortable Sg56 ·
Recommended Not Recommended

I bought my grandson this seat about a year ago. He is 5 years old, and on the small side (he’s 35lb, about 43 inches tall). He has been very comfortable in this seat for the past year. The seat is super easy to install, and doesn’t wiggle loose in the car seatbelt like our old seat did. The price point was very reasonable, and I would recommend this seat to anybody looking for a reasonably priced, easy to install convertible car seat.

Ease of Use

Favorite seat! SNeal ·
Recommended Not Recommended

Love this seat! I've been a fan of Graco for years, but this is by far my favorite seat we've owned. The install is so incredibly easy- literally takes less than 30 seconds. Loved it enough to purchase a second one for our other vehicle!

Ease of Use

Great seat! MnM mama ·
Recommended Not Recommended

We love this seat! It’s compact front to back and can be easily installed in less than 1 min with the Snuglock feature. My daughter finds it comfortable and it will grow with her for years to come.

Ease of Use

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cup holder inserts graco 3 in 1 travel system graco snuglock travel system manual cars padded seat covers rear seat covers seat back covers

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