SKU: 53007000378
britax hi liner sg

britax hi liner sg Britax Safe n Sound Hi Liner SG Booster

$22.59 $25.10
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Description

britax hi liner sg Britax Safe n Sound Hi Liner SG BoosterAt Wattlebee Baby we are proud to offer the Britax Hi Liner SG Booster exclusively to families across the Northern Rivers. This tall booster seat is perfect for your growing child. With the lifesaving anti submarining SecureGuard clip, an adjustable headrest and built in cup holders, the Hi Liner is designed to keep your child comfortable for the entire journey. Key Features One hand adjust headrestSimple to use and easy to adjust as your child grows.

At Wattlebee Baby we are proud to offer the Britax Hi Liner SG Booster exclusively to families across the Northern Rivers.

This tall booster seat is perfect for your growing child.

With the lifesaving anti submarining SecureGuard™ clip, an adjustable headrest and built in cup holders, the Hi Liner is designed to keep your child comfortable for the entire journey.

Key Features

One hand adjust headrest
Simple to use and easy to adjust as your child grows.

SecureGuard™ clip
The patented SecureGuard™ clip is designed to protect your child’s abdominal area from internal injury caused by submarining. It positions the vehicle lap belt correctly over the hips and thighs to help prevent slumping and submarining.

Compact design for 3 across the back
Perfect for cars with smaller rear seating space. The compact design makes fitment easier in small cars where the front seats sit close to the back, and allows you to fit 3 seats across for growing families.

Cup holders
Two hide away cup holders for easy access and convenient storage for your child's drink bottle.

Armrest
For seat belt positioning and extra comfort for child

Available In Different Colours
Comes in smart sophisticated colours designed to suit all vehicles including Jet Black, Grey or Ink Blue.

Easy To Adjust Headrest
One-hand adjust headrest is simple to change in order to comfortably fit child's height.

Machine Washable Covers
Quick-remove washable cover.

SecureGuard 4th Point Of Safety
It helps to prevent slumping and is designed to protect your child from submarining.


General

Suitability:

From 4 years to 8 years (approx)


Dimensions 

Booster Mode Minimum:

H: 752mm

D: 385mm

W: 410mm

 

Booster Mode Maximum:

H: 855mm

D: 385mm

W: 410mm


Product Weight

Seat Weight:
5.4 Kgs




The safest place for your child in any vehicle is in the back seat.  The center of the rear seat is preferable to outboard positions, as long as you can achieve a tight installation, because it is the furthest from a side impact.

Infant Carrier
Restraints manufactured to AS/NZS1754-2004 - When your child's shoulders are level with the top slot of their Infant Carrier it is time to move into a larger seat.
Restraints manufactured to AS/NZS1754-2010/2013 - When your child's shoulders reach the shoulder height marker to change to the next suitable restraint or forward facing mode.

Convertible Car Seat
Restraints manufactured to AS/NZS1754 - 2004 - Your child is too big for a Convertible Car Seat when their shoulders are 25mm above the top harness slot.
Restraints manufactured to AS/NZS1754 - 2010/2013  - When your child's shoulders reaches the shoulder height marker to change to the next suitable restraint or booster mode.

Booster Seat
Restraints manufactured to AS/NZS1754 - 2004 - If your child’s eyes are above the top of the Booster Seat back when seated, this is an indication to move to the next form of seat.
Restraints manufactured to AS/NZS1754 - 2010/2013  - When your child's shoulders reach the upper shoulder height marker to change to the next suitable restraint.

Booster Cushion
Restraints manufactured to AS/NZS1754 - 2004 - If using a Booster Cushion with no back (e.g. Nova) then the child’s eye level must be below the car seat back or headrest when the child is seated.  
The introduction of the AS/NZS1754 - 2010 saw the deletion of Booster Cushions due to their inability to provide side impact protection. Safe-n-Sound ceased manufacturing booster cushions in 2011.

Each child restraint seat has a flame retardant cover which can be removed for cleaning. Cleaning instructions are on the care label attached to the cover. All child restraint seat covers are machine washable (gentle cycle), cold water only, rinse well, dry on flat surface, do not tumble dry, bleach or dry-clean.


Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 53007000378

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Verified Purchase
Shay C.
Lexington, US
★★★★★ 5
Mode switch pigtail a little large for firewall pass through
Harness works great, quick and easy to install, only issue I had was the mode switch pigtail was a little large to push into firewall pass through and it could use an additional 2’ to 3’ of wire on mode switch end
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Reviewed in the United States on November 2, 2022
R
Verified Purchase
roys_fishing
Houston, US
★★★★★ 1
Poor quality switches
Main power switch didn’t work and since I didn’t get a chance to install when I ordered it, I can’t return it! Once again Amazon gets my money.
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Reviewed in the United States on November 28, 2025
J
Verified Purchase
Jeff krevsAmazon Customer
Pawtucket, US
★★★★★ 5
Highly recommended
This is the BEST harness for side shooters lights . I just wish the switch would light up but Awsome harness
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Reviewed in the United States on January 8, 2023
S
Verified Purchase
SpartanGrad
Louisville, US
★★★★★ 5
Can't ask for more from a 7.1 or 5.1.2 receiver
Style: Receiver, Style: Receiver
My previous Yamaha receiver was 10 ys old, and was an entry level 5.1 model (RX-V373). I accidentally fried it by putting my phone's USB connector in. I have been wanting to upgrade for a while the last few yrs but waited it out until receivers have 8k pass through (so whenever 8k becomes more of a thing I can keep this new one a bit longer). The 3773 had 4k pass through when I got it 10 yrs ago, well before 4k became as available as it is now for example, which was one reason I held out on replacing as long as I did. This time around I decided to step up into the premium Aventage line of Yamaha. It was between this & the A4A, not a huge price difference, but I would have needed to replace my entertainment center since the A4A is too deep to fit. Didn't seem worth it & now I'm really happy with my choice. My living room set up (in a condo) has 2 surrounds, to add 2 more would require building mounts on the wall (couch is against the wall with 2 surrounds on side tables) which I don't want. This has 7 channels to allow for 2 Atmos front firing speakers which I got & love how immersive it sounds. Bi-amping the front towers is an option, but that uses 2 extra channels so the Atmos front speakers can't be connected at the same time as bi-amping. I experimented with biamping & biwiring & couldn't hear any difference so I have the fronts biwired, allowing for the 2 Atmos front connections. New features/improvements from my old receiver include more power/watts, lower THD & better sound, streaming music directly from the receiver with Music Cast, and it processes Atmos & DTS audio. One key feature all the Aventage models have that the RX ones don't is the 5th foot in the middle, which was designed & tested to improve the sound with more stabilization. Aventage also has a 3 yr warranty (vs 2 for RX). The top of the line RX model looks identical in specs which I also considered but it just sounds like this 1st Aventage model is slightly better with it its parts & sound quality, and not that much more. Especially since I got the A2A on sale for 999.95 (vs the 1200 price). I actually bought this for 1150 which was a teeny mark down, and then saw Amazon put it on sale for 999.95 shortly after (about 2 weeks). Amazon customer service was great when I called about that, and they credited the difference. Back to the receiver...2 subwoofers can be connected, and an amplifier for the 2 front speakers can be connected as well through pre outs. Probably more improvements but those are the main ones. Along with this receiver upgrade, I also upgraded my subwoofer & added a Nvidia Shield Pro streamer (due to it handling Atmos & 4k upscaling of lower hd content, which my Roku Ultra cannot do). My system now includes Polk TSI 400 front towers Polk CS20 center, Polk T15 surrounds (all of these Polk speakers are from 10 yrs ago as well & still work great for me, they sound better too with this receiver). I added Klipsch R-41SA Atmos front firing speakers, and upgraded from a Polk PSW505 subwoofer to an SVS SB3000 (night & day difference with that upgrade!). Have a Roku Ultra from a few yrs ago, and the Nvidia as well now. The TV also will be upgraded at some point, but I'm perfectly content with it now (is a 7 yrs old 55 inch 4K Sony Bravia). This receiver also processes Dolby Vision which I'd need a new TV for, as well as eArc which this receiver also has. Over time I will continue adding to my set up. A decent record player is next, and a current blu ray player (the one I have is rather old & only has 1080p). Then a new TV & A 2nd sub (will get another SVS SB3000). The last & most expensive upgrade will be the rest of the speakers. From Polk to B&W most likely, but when I get to this I will compare both at the same price point as I am still very impressed with the quality of my Polks for their price point. I also plan to add an amp (Emotiva most likely) to power the fronts. Another reason I was ok with the A2A watts per channel for now (100 with 2 channels driven for music, unsure what it is at 5.1.2 but it's plenty especially with the thunder the SVS sub provides even at low volumes, and the ability to boost dialogue in addition to the center channel. I'd rather get a dedicated amp for more music power than a higher priced receiver just due to more watts. Very pricey to do all of this at once (in particular the speakers & amp), but for now I am thrilled with how much better everything sounds with these phase 1 upgrades. Highly recommend it, if you are coming from an entry level budget receiver this can pump more life into your current speakers.
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Reviewed in the United States on February 17, 2023
A
Verified Purchase
Amazon Customer
Charlottesville, US
★★★★★ 5
Sounds fantastic and easy to operate
Style: Receiver
I used to sell home audio equipment a long time ago and I love this unit! Nice & clean look, the layout for inputs/output is standard and easy to see and the remote makes sense...well, to me it does lol. I had purchased an O***o unit because it's been good brand for a while...returned it because it was defective but I didn't care for it (you had to be a real audiophile to get into the setup and who has time for that?). The Yamaha is easy to work with and sounds fantastic. Make sure you don't go cheap on the speakers!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026

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