Harmony Defender 360° Convertible 3-in-1 Booster Car Seat - Heather Grey - Only at Best Buy

Model Number: 0302008HGY
Web Code: 11696959


The Harmony Defender 360 3-in-1 harnessed convertible car seat offers comfort for your little one and peace of mind for you. It features a 5-point harness and converts from a forward-facing car seat to a high-back or backless booster. EPE energy-absorbing foam delivers 360-degrees of impact protection, and the no re-thread harness offers simple 1-handed height adjustment.


Harmony Defender 360° Convertible 3-in-1 Booster Car Seat - Midnight
Harmony Defender 360° Convertible 3-in-1 Booster Car Seat - Heather Grey - Only at Best Buy
Sold and shipped by Best Buy
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Weight capacity

  • Fits children: 10-29.5kg (22-65lb.) and 68.6-144.8cm (27-57in.) with harness
  • Fits children: 13.6-50kg (40-110lb.) and 86.4-144.8cm (34-57in.) in Booster mode without harness

Safety features

  • Exceeds Canadian CMVSS 213 standards, US FMVSS 213 standards, and European ECE standards
  • Provides 360 degrees of impact protection with deep, supportive headrest, backrest and seat base
  • Rollover-tested, 5-point harness with 1-hand, no re-thread harness height adjustment helps keep your child secured for the ride
  • 9-position headrest features 1-handed height adjustment
  • Belt path design prevents child from sliding under the lap belt on impact (booster seat mode)
  • Unique V-shape, smooth-contoured design promotes safer installations
  • EPE energy-absorbing foam in headrest, backrest and base

Convenience for you

  • 3-in-1 deluxe booster car seat grows with your child transitioning from a harnessed booster to a high-back booster to a backless booster
  • Unique infinite recline system keeps your child comfortable during long car rides
  • Equipped a set of LATCH guides for a safe and easy installation
  • Machine-washable booste car seat pad features premium durable fabrics and extra foam for maximum comfort
  • Cup/snack holder can be installed on either armrest
Car Seat Type
3-in-1 Harness to Backless Booster Car Seat
Car Seat Orientation
Rear-facing Car Seat
Forward-facing Infant Car Seat
High-backed Booster Seat
Backless Booster Seat
Harness Points
Base Material
HDPE Plastic; Polyester
Compatible Strollers
Not Applicable

Safety Requirements

Minimum Seat Weight Capacity
10 kg
Maximum Seat Weight Capacity
50 kg
Minimum Child Height
68.6 cm
Maximum Child Height
144.8 cm
Weight Capacity:Front Facing(Min)
10 kg
Weight Capacity:Front Facing(Max)
50 kg
Weight Capacity:Booster Seat(Min)
13.6 kg
Weight Capacity:Booster Seat(Max)
50 kg

Popular Features

Cup Holder
Removable Seat Cushion
Washable Fabric
Detachable Base
Side Impact Protection
LATCH System
Snack Trays
Aircraft Certified
Heather Grey
Country of Origin


46.36 cm
67.31 cm
50.8 cm
8.3 kg
  • Item
  • Manual
  • Parts

  • Exactly as described

    from Taber, AB on November 17, 2019

    This is a great versatile carseat for a great price. I love that I will never have to buy another seat again.

  • Amazing car seat!

    from  on September 20, 2019

    Love this car seat! Easy to put together and install. We now have 4 of them,2 for each car for our kids. I love that they turn into a backless booster later. They are also nice and narrow compared to a lot of other brands out there. The 2 main reasons we went with this seat instead of the diono was that this one had arm rests for the kids vs. diono doesn't,and the price. You can't beat it! It was delivered really quickly too and none of the boxes were damaged.

  • Nice car seat

    from St. John’s on June 22, 2019

    Easy assembly and fits well in my Rav. The hardest part of assembly was finding the manual under the seat.

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