Defender 360° MAX SIP - Midnight-White
3-in-1 Combination Deluxe Car Seat
For children 26.5 – 120 lbs. (12 – 54 kg) | 27 – 57 in (68.6 – 144.8 cm)
Model number: 0302039BLK
Safety, comfort, and innovation come together in the Defender MAX SIP, a next-generation car seat designed to give parents peace of mind and children a secure, comfortable ride. Engineered for longevity, it grows with your child from a forward-facing harnessed seat to a high-back booster and finally to a backless booster—providing years of reliable protection.
As one of the first car seats to meet the new U.S. side-impact safety standards, the Defender MAX SIP sets a new benchmark in child passenger safety. Its full-body impact protection, anti-torque backrest and headrest, and energy-absorbing EPE foam work together to minimize crash forces, ensuring your child is surrounded by top-tier protection at every stage.
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Designed with parents in mind, this seat features a 1-hand, no-rethread harness height adjustment, 9-position adjustable head support, and an infinite-recline system—allowing for quick, hassle-free adjustments as your child grows. The UAS/LATCH and top tether system makes installation secure and straightforward, while the visually pronounced belt guides help ensure correct seat belt placement in booster mode.
For all-day comfort, the ultra-plush, premium fabric seat pad is soft yet durable, with removable, machine-washable covers for easy cleanup. An optional interchangeable cup/snack holder keeps drinks and snacks within reach, while the V-shape design and inclined seat plane promote a secure fit and proper positioning.
Recognized as an IIHS Best Bet Booster and awarded by Baby Consumers and Babble as a top-rated car seat, the Defender MAX SIP delivers a level of protection and convenience that families can trust. With advanced side-impact protection and a modern, contoured design, it’s built to keep your child safe—and to set a new standard in car seat safety.
Product Features
- IIHS BEST BET booster rating for both high-back and backless modes.
- Complies with Canadian CMVSS 213 and USA FMVSS 213 standards
- 3-in-1 car seat: 5-point harness, high-back, and backless booster.
- The forward-facing Harness mode fits children from 26.5 – 65 pounds (12 – 29.5 kg) and 27 – 57 inches (68.6 – 144.8 cm) tall.
- The forward-facing Booster modes without harness (high-back or backless) fit children from 40 – 120 pounds (18.1 – 54 kg) and 34 – 57 inches (86.4 – 144.8 cm) tall.
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- Deep, supportive headrest, backrest, and seat base for 360° of immediate crash protection from front, rear and side-impact collisions.
- The unique V-shaped, smooth-contoured seat design protects your car’s upholstery and is a much-needed space-saver, allowing a better fit in any type of vehicle and easy access to the LATCH belt.
- EPE energy-absorbing foam in headrest, backrest, and base.
- Top Tether and UAS/LATCH (Universal Anchorage System) equipped.
- 1-hand, no re-thread height adjustment harness.
- 9-position, 1-hand height adjustable headrest; extends to 29″.
- Up-front, 1-hand harness adjuster.
- Anti-torque design.
- The ultra-plush seat pad, made with durable, premium fabric and extra foam, provides maximum comfort and is removable for washing.
- Shoulder and crotch pads are included.
- The unique recline system offers a multitude of recline positions.
- The visually pronounced belt guides promote correct installment of the seat belt.
- Comes with a practical cup and/or snack holder that can be easily installed on either armrest.
- Offered with a 1-year warranty.
Specifications | How-to & Support | Available at
Safety
Built with thoughtful engineering, the Defender 360° MAX surrounds your child with supportive padding, deep side wings, and EPE energy-absorbing foam at the head, torso, and legs. Its reinforced frame pairs with LATCH and Top Tether connectors to support a snug, stable installation. With an IIHS BEST BET booster rating, it’s a well-rounded choice for everyday travel.

Comfort
Long rides are no problem with the ultra-plush, extra-padded seat, crafted from premium, durable fabric for long-lasting comfort. The adjustable headrest, multiple recline positions, and cushioned shoulder and crotch pads provide a custom fit that grows with your child, keeping them cozy and supported on every journey.

Ease-of-Use
Designed for hassle-free adjustments, the Defender 360° MAX features a one-hand, 9-position height-adjustable headrest, no-rethread harness, and up-front harness adjuster for quick, effortless customization. The space-saving V-shaped design allows for a better fit in your vehicle while ensuring easy access to the UAS belt for seamless installation.
Anti-Torque Backrest
Built with an anti-torque design, the Defender 360° MAX reduces rotational forces in the event of a collision, helping to stabilize the seat and enhance overall safety. This added reinforcement provides extra protection.
Additional features

Ultra-plush seat cover made with premium fabrics

Unique recline system

Removable & machine washable premium seat cover

UAS/LATCH & Top Tether equipped

Infant insert cushion
Specifications

Net weight: 8.3 kg (18 lbs.)
Gross weight: 9.6 kg (21 lbs.)
How-to & support
Replacement parts

Cup holder

Shoulder Belt Safety Guide with screw

Locking clip

Backrest connector rod, screw with washer

Infant insert cushion