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Description
cybex aton 4 car seat Cybex Aton M SensorSafe - Lavastone BlackThe innovative technology behind the CYBEX Aton M and SafeLock Base with SensorSafe combination offers easy functionality in a safe and thoughtfully designed infant car seat. This car seat integrates important safety technology into the chest clip of the harness to alert when unsafe situations arise. The alerts are provided through a vehicle receiver and the caregivers smartphone to ensure safety for children in a range of unsafe situations. CYBEX
The innovative technology behind the CYBEX Aton M and SafeLock Base with SensorSafe™ combination offers easy functionality in a safe and thoughtfully designed infant car seat. This car seat integrates important safety technology into the chest clip of the harness to alert when unsafe situations arise. The alerts are provided through a vehicle receiver and the caregiver’s smartphone to ensure safety for children in a range of unsafe situations.
CYBEX Aton M SensorSafe Infant Car Seat with SafeLock Base Features
- SensorSafe Technology: Originally developed to help prevent the rising number of infant hot car deaths, SensorSafe will chime through the installed vehicle receiver to alert when a child is still secured in the back seat after the car has been switched off.
- Adjustable Headrest: Adjustable 11-position height adjustable headrest with a no-rethread harness for protection that grows with your child for optimal comfort and safety.
- XXL Canopy: Extendable XXL foldaway sun canopy with a UPF 50+ rating provides a cozy environment for naps on the go.
- Smart-tech harness chest clip with SensorSafe provides alerts when unsafe situations arise in the back seat
- Side-impact Protection absorbs up to 25% more impact forces in a collision* (*when compared to the same car seat without L.S.P. extended)
- 11-position height-adjustable headrest with no-rethread harness
- Energy absorbing shell helps reduce the forces felt by the baby in a collision
- Extendable XXL foldaway sun canopy with a UPF 50+ rating
- European belt routing provides safe installation without a car seat base
- Removable newborn insert provides support from 5 lbs. to 11 lbs.
- Travel system ready with CYBEX and other strollers using car seat adapters
- Included SafeLock™ Base features an anti-rebound design, a LATCH system and height adjustable load leg for extra stability and safety
- Designed and engineered in Germany
Specifications:
- Measurements: L 26 x W 17.3 x H 15.4 – 22.25 inches
- Weight: 10.9 lbs. (without base), 23.3 lbs. (with base)
- Use from Birth up to 30 inches tall and 35 lbs., following the directions in your user manual
- Carrier Weight: 10.9 lbs
- Base Weight: 12.4 lbs
- Usage Age: Birth to 35 lbs
- Child Height: Up to 30"
How SensorSafe™ Works:
Originally developed to help prevent the rising number of infant hot car deaths, SensorSafe will chime through the installed vehicle receiver to alert when a child is still secured in the back seat after the car has been switched off. This reminds the caregiver to act quickly, but if the child is still secured after several minutes an alert will be sent to the caregiver’s cellphone through the downloaded app. If the situation is still not remedied, the designated emergency contact will receive an alert with the GPS coordinates of the vehicle’s last known position. This state-of-the-art safety technology is designed so there is no need to reinstall each time you drive - just keep the receiver plugged into your car’s OBD port to drive with that extra peace of mind.
- Chimes through the installed vehicle receiver if child is still secured in the seat when the car is switched off
- Alerts through the caregiver’s cell phone if the child is left behind in the vehicle and then alerts the designated emergency contact if the situation is still not remedied
- Emergency contact receives GPS coordinates of the vehicle’s last known position
- Alerts through the vehicle receiver and caregiver’s smart phone when the child has unbuckled themselves while the vehicle is in motion
- Monitors the back seat temperature to alert through the vehicle receiver and the caregiver’s smart phone when the back seat appears to be too hot or too cold for the child’s comfort
- Provides warnings to the caregiver when the child may have been seated for too long and needs a break
- Receiver plugs directly into your car’s OBD port and syncs with the caregiver’s cell phone
- Only one install needed if receiver is kept plugged into vehicle’s OBD port
- Helps to prevent misuse by providing guidance on installation, how-to videos, FAQ’s, direct link to customer service and more through the SensorSafe app.
- App can monitor up to 16 chest clips on a single platform
- App download available for Android and IOS
- Anti-rebound design reduces car seat rebound movement by nearly 30%
- Highly visible indicators change color when the car seat and load leg are properly installed
- Height-adjustable load leg stabilizes the car seat and can reduce crash forces up to 40%
- One-hand release buttons for easy removal of the car seat from the base
- Dual Level Indicator ensures the infant car seat is reclined at the proper angle
- Unique belt tensioning system offers simple and secure LATCH and vehicle seat belt installation
Specifications:
- Measurements: L 26.3 x W 15.4 x H 13.9 inches
- Weight: 12.4 lbs.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
Very comfortable
Color: Grey
I’m not sure if I am just transitioning from a very uncomfortable office chair, but this one is extremely comfortable. Very good dynamic lumbar support that reminds you that it’s there. Only cons would be a low back (I am 6’5”) but I’m not laying my head back anyways. Also the seat length is a touch short for me but standard size really. Great bang for buck with an open box deal. Easy to assemble. TBD on durability.
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Reviewed in the United States on June 10, 2026
★★★★★ 5
BUY this chair!!!!!
Color: Cream
After using this chair for about a month, I can confidently say that it's one of the most comfortable office chairs I've sat in for an extended period of time. Being in school and studying 8+ hours a day at my desk would normally make my back hurt in any other chair. Fortunately, after using this chair all day I have very very minimal back pain, if any at all (definitely due to previous injuries). The cushion on the back of the chair is extremely supportive and comfortable over all. Cannot say enough good things about this chair!!!! Definitely worth the price and easy to put together.
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Reviewed in the United States on May 31, 2026
★★★★★ 4
Good quality
Color: Grey
It was easy to put together. Material feels durable. Only downside is that it doesn't tilt lock and the arm rest height isn't adjustable (though it can be folded up). I'm 4'11" and the back is the perfect height for me with great neck and lumbar support. My feet kinda dangle but I use a foot rest so it's not a big deal. My boyfriend who's 5'10" says it's comfy but the back could be taller.
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Reviewed in the United States on October 27, 2025
★★★★★ 5
Perfect chair!
Color: Cream
I love this chair! Was hesitant to buy due to the price being a bit more than I wanted to spend, but I work from home and have terrible posture from sitting at my desk all day, so I needed something that would be conducive to helping me sit up properly. I put the chair together myself, it was heavy but overall pretty easy to do. The tools provided worked great and the directions were clear. Aesthetically, it’s a lovely neutral color and everyone who has seen it so far has complimented me and on how nice it is and how comfortable it looks — Indeed it’s a very expensive looking chair. The first time I sat on it I wasn’t sure if I was going to like it….maybe something about the lumbar support seeming to protrude too much? At any rate, I gave it a couple of days and I absolutely LOVE it. I can already feel my posture improving, no backaches and I’m perfectly comfortable all day long. I’ve had it for a couple weeks now and couldn’t be happier. It seems to be very well made, so I’m confident it will last a very long time and be worth the price. I HIGHLY recommend this chair!
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Reviewed in the United States on June 13, 2025
★★★★★ 1
UPDATE: DEFECTIVE… it was a Great chair... a bit short for tall people!
Color: Cream, Color: Cream
I purchased this chair four years ago and really liked it. However, when it was damaged during a move, I attempted to replace it. Unfortunately, the replacement chair had a construction issue that had been repeatedly mentioned in numerous comments spanning over a year at least. This defect prevents the chair from being completely assembled, rendering it unusable (screw holes don’t line up). Amazon has failed to address this issue by removing these defective chairs from its inventory. You won’t be aware of this problem until you’ve almost completed assembling the chair. At that point, you’ll have to disassemble it, rebox it, and return the box to UPS. This is an incredibly inconvenient process, and Amazon must take immediate action to rectify this issue before anyone considers purchasing this chair again.
Old review from 2023:
Based on someone else's review, it would seem that this chair is perfect for average-height people but less great for those of us who are a bit tall or (according to her) a bit short. I'm 5'9 with most of my height in my legs. I like a chair to be tall enough that my legs can be straight to the floor from my knees to my feet and still have support under my knees. This chair is too short for that, even at it's highest setting, but it can be fixed with a simple replacement of the gas lift cylinder for a mere $20 (search for gas lift cylinder on Amazon). And the extra $20 is worth it because other than that one issue, this chair is great. My first experience with this chair was at work when the firm replaced all of our desk chairs. I loved it so much that I bought it for myself when I went into private practice. The lumbar support hits in just the right spot and moves with your body as you lean in and out. I love the cream color, and the seat is padded nicely. I especially love the liftable arms. I sit at my desk for 8+ hours straight 5-6 days a week, and I never have body pain-- Granted, I am only 36, but I have definitely experienced this with other office chairs that claimed to be "ergonomic". With a simple lift cylinder replacement and a movable standing desk (which I never actually stand at), I can finally sit at my desk without my knees hitting the underside of the desk or my legs having to be extended out to have support under my knees. These two things mean that I don't slump at my desk anymore, and my neck and back thank me! :)
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Reviewed in the United States on May 23, 2023