| Mode | Weight | Height |
|---|---|---|
| Rear-facing harness | 3–30 lb | 15.7–32 in |
- Seat weight
- 8.17 lb
- Width
- 19 in
- Usable life
- See label
- Aircraft
- Certified
$149.99River Stone · Amazon price as of 2026-11-02 17:38 UTC, subject to change
1 / 8 Product image 1
Amazon product images. See this listing on Amazon
CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON. THIS CONTENT IS PROVIDED ‘AS IS’ AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.
Price on Amazon.com as of 2026-11-02 17:38 UTC, and subject to change.
An infant car seat with one mode: rear-facing harness 3 to 30 lb, 15.7 to 32 in.
Opens Amazon.com in a new tab. As an Amazon Associate I earn from qualifying purchases.
CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON. THIS CONTENT IS PROVIDED ‘AS IS’ AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.
The LiteMax NXT with SensorySoothe is a rear-facing infant car seat for babies from 3 to 30 lb and 15.7 to 32 in, with the head at least 1 in below the top of the seat back. The 8.6 lb carrier clicks into a LATCH or seat-belt base, or belts in alone. Expiry is on the label.
This version suits parents who want the LiteMax NXT carrier with a handle that plays lights, music and sounds, plus the SensorSafe chest clip and app alerts. The trade-off is more electronics to set up, and Evenflo lists batteries as required, while the child limits, 8.6 lb weight and listed size match the plainer SensorSafe version. Compared with the Revolve180 version, the base does not rotate.
A research summary of Evenflo’s published specifications and manual, read . Not a hands-on test or a crash-safety rating.
This seat covers one stage. Check the date label on the shell before using a hand-me-down; every seat has an expiry.
| Mode | Child weight | Child height | Minimum age | Conditions |
|---|---|---|---|---|
| Rear-facing harness | 3 to 30 lb | 15.7 to 32 in | Not published | Top of child's head at least 1 in below top of seat back. |
A child must meet every limit for the mode they use. The labels on your seat and its manual are the final word.

At 17.83 in at its widest, measure your back seat before counting on three across. It weighs 8.6 lb, which matters if you will move it between cars or carry it through an airport.
Quartz, Agate, Jasper.
The base installs with its Quick Connect lower anchor connectors or with a lap or lap-shoulder belt routed through the side openings and under the hooks on the belt guides. Either way, set the 4-position recline foot until the indicator is completely green, then close the LockStrong arm until it clicks and its lock indicator turns green. The manual says never to lay any part of the vehicle belt over the LockStrong arm. Without the base, the lap belt goes through the carrier's belt guides and the shoulder belt wraps around the back into the rear guide, and the level line must be level with the ground. Neither method may move more than 1 in at the belt path.
Source: Evenflo LiteMax NXT owner's manual, SensorySoothe listing (PDF)
The handle has three locked positions: Viewing, Carry and Storage. The manual says it plays lights and sounds in the travel position and must be in a locked position whenever the seat is in a vehicle. Pressing any button turns it on and cycles presets, and pressing and holding turns it off. White Noise, Nightlight or both together play until the end of the drive; other presets turn off after 15 minutes. Custom scenes come from the Evenflo app. The manual's FCC section names the module SensorySoothe 1.0. Evenflo's product page lists batteries as included and required.
Source: Evenflo LiteMax NXT owner's manual, SensorySoothe listing (PDF)
The no-rethread harness rises with the headrest: loosen the harness, lift the handle at the top of the headrest and move it until the straps are at or just below the shoulders. The buckle strap has three slots and ships in the middle one, which the manual says fits an average newborn. The waist straps can move to a narrower position for a smaller infant, and a top loop on the back of the harness shortens the straps when needed. The manual says to remove the harness covers if they interfere with chest clip placement on a smaller infant. The seat is outgrown at 30 lb, 32 in, or when the head is less than 1 in from the top of the shell.
Source: Evenflo LiteMax NXT owner's manual, SensorySoothe listing (PDF)
To remove the cover, take off the harness covers, buckle cover and infant insert, lift off the headpad, unclip the canopy, then release 3 snaps at the front, the snaps beside the handle and 4 snaps around the back. The buckle strap and waist straps must come out before the cover lifts off. Soft goods are machine washed separately in cold water on a delicate cycle with no chlorine bleach, then tumble dried for 10 to 15 minutes on low heat. The harness is wiped with mild soap and water and air dried. The manual allows 70% isopropyl alcohol to disinfect the seat.
Source: Evenflo LiteMax NXT owner's manual, SensorySoothe listing (PDF)
Each campaign naming this family was read against this model’s numbers and build dates, and none covers it. Still check your seat’s model number and date of manufacture before use, especially on a used seat.
The manual gives 3 to 30 lb and 15.7 to 32 in, with the top of the head at least 1 in below the top of the seat back. Once any one of those is exceeded, the seat must not be used.
Evenflo LiteMax NXT owner's manual, SensorySoothe listing (PDF) (opens in a new tab)
Evenflo lists the seat at 8.6 lb and the assembled size at 17.83 in wide, 27.32 in deep and 26.77 in high. The box contains the infant seat and one base.
Evenflo LiteMax NXT Infant Car Seat with SensorySoothe product page (opens in a new tab)
The manual lists aircraft among its certified uses, carrier only, and says never to install the base in an aircraft. It also says to unfasten the SensorSafe chest clip during taxi, takeoff and landing and to fasten it again before lifting the carrier off the aircraft seat.
Evenflo LiteMax NXT owner's manual, SensorySoothe listing (PDF) (opens in a new tab)
The manual says to stop using the seat after the expiration date on its date of manufacture label, or after a crash. It does not give a number of years, and the product page for this version does not either, so I would read the label under the carrier and on the base.
Evenflo LiteMax NXT owner's manual, SensorySoothe listing (PDF) (opens in a new tab)
Evenflo lists the SensorSafe version with the same 3 to 30 lb range, 8.6 lb weight and 17.83 in width. It has a SensorSafe chest clip but no SensorySoothe handle.
Evenflo LiteMax NXT Infant Car Seat with SensorSafe product page (opens in a new tab)
Answers refer to the model and manual version on this page. Check the instructions supplied with your seat.
| Model | Top child weight | Seat weight | Width | Usable life |
|---|---|---|---|---|
| LiteMax NXT Infant Car Seat with SensorySoothe (this seat) | 30 lb | 8.6 lb | 17.83 in | — |
| LiteMax NXT Infant Car Seat with SensorSafe | 30 lb | 8.6 lb | 17.83 in | — |
| LiteMax NXT Infant Car Seat | 30 lb | 8.6 lb | — | — |
| LiteMax 30 Infant Car Seat | 30 lb | 8.17 lb | 19 in | — |
| LiteMax Sport Infant Car Seat | 30 lb | 8.17 lb | 19 in | — |
| NurtureMax Infant Car Seat | 22 lb | 9 lb | 14.76 in | — |
| Shyft DualRide Infant Car Seat and Stroller Combo | 30 lb | 29 lb | — | — |