do all britax car seats use the same base Britax One4Life All-in-One Car Seat with ClickTight Installation + SafeWash Fabrics

do all britax car seats use the same base Britax One4Life All-in-One Car Seat with ClickTight Installation + SafeWash FabricsIt all starts with the first ride home. Then, theres the first family outing. The first ride to daycare. Soon, youll be driving them to their first play date or soccer game. Throughout every change and milestone, you can count on one constant for your journey: the One4Life all in one car seat. This car seat and booster combo takes your child from birth to big kid with trusted Britax safety, ClickTight technology for easy car seat installation, and

It all starts with the first ride home. Then, there’s the first family outing. The first ride to daycare. Soon, you’ll be driving them to their first play date or soccer game. Throughout every change and milestone, you can count on one constant for your journey: the One4Life® all-in-one car seat. This car seat and booster combo takes your child from birth to big kid with trusted Britax® safety, ClickTight® technology for easy car seat installation, and parent-approved convenience features. One4Life starts in rear-facing mode with an extended capacity of up to 50 lbs, allowing your child to ride rear-facing longer. It easily converts to forward-facing toddler mode (30-65 lbs) and belt-positioning booster mode (40-120 lbs).* Thanks to ClickTight technology, you can install the seat with confidence, every time. As your child grows, you can easily adjust the 15-position harness with just one hand — no rethreading required. This all-in-one car seat features a high-strength steel frame, SafeCell® technology, and a V-shaped tether, helping to give you peace of mind for the road ahead. The washer and dryer-friendly car seat cover is available in warm, neutral tones with a sophisticated aesthetic to match your lifestyle. Plus, it’s naturally flame-retardant with no added FR chemicals. The breathable knit fabrics allow airflow to help keep your precious cargo cool and comfortable, while the plush padding helps make rides enjoyable. With thoughtful convenience features, premium comfort, and an all-in-one design, you can confidently navigate every stage of the journey with just one car seat — for life. *Due to regulatory changes, weight and height ranges may vary by model. Always follow the weight and height specifications listed in your product's user guide and on your product labels. **Select fashions only.

• ALL-IN-ONE CAR SEAT: Designed to grow with your child for 10 years, easily converting from a rear-facing infant and toddler seat (5-50 lbs) to a forward-facing seat with a harness (30-65 lbs) and, finally, to a high-back booster (40-120 lbs). *Due to regulatory changes, weight and height ranges may vary by model. Always follow the weight and height specifications listed in your product's user guide and on your product labels. 
• CLICKTIGHT® INSTALLATION: Install with confidence in 3 easy steps: Pinch to open, thread and buckle, click it closed! 
• EXTENDED REAR-FACING CAPACITY: Accommodates children up to 50 lbs and 49” rear-facing, so your child can ride rear-facing longer.
• HIGH-STRENGTH STEEL FRAME: Reinforces the seat structure to help keep it sturdy and stabilized. 
• SAFECELL® TECHNOLOGY: Acts as a crumple zone, absorbing crash energy to help keep it away from your child. 
• TWO LAYERS OF ENERGY MANAGEMENT: The protective seat shell and foam-lined headrest help absorb impact energy and are designed to help keep your child's head, neck, and body safe.
• TRUSTED BRITAX® SAFETY: The seat is side-impact tested according to FMVSS 213a.* It is also tested to FMVSS 213 frontal impact standards. *FMVSS 213a sets side-impact standards for children up to 40 lbs and 43” with a 5-point harness. It does NOT include standards for testing harnessed children above 40 lbs and 43” or for booster mode.
• NATURALLY FLAME-RETARDANT CAR SEAT COVER: With no added FR chemicals.
• SAFEWASH® FABRICS: No more hand-washing or waiting for the cover to air-dry; just quick and easy cleanup so you can keep moving.
• 15-POSITION NO-RETHREAD HARNESS AND HEADREST: Adjust together quickly and easily with one hand to help create the proper fit as your child grows; no rethreading, ever! 
• PATENTED V-SHAPED TETHER: Helps slow and reduce forward movement during a crash. 
• QUICK-PUSH, 9-POSITION RECLINE WITH EASY-READ INDICATORS: Helps you find the most comfortable fit for your child and the best angle for your vehicle. 
• BREATHABLE KNIT FABRICS: Allow airflow to help keep your precious cargo cool and comfortable (select fashions only). 
• PREMIUM COMFORT: The silky-smooth cover, plush cushioning, soft comfort pads, and tag-free headrest make for enjoyable rides.
• THREE INFANT INSERTS: Help provide a better fit for infants 20 lbs and under.
• TIMELESS, SOPHISTICATED AESTHETIC: Warm, neutral fashions create a sleek, polished, and versatile look to match your lifestyle. 
• 2 DISHWASHER-SAFE CUP HOLDERS: Help keep your little one's drinks or snacks within reach. Easily twist out for cleaning between rides. 
• COLOR-CODED BELT PATHS: Make it easy to route the seat belt through the correct paths for each car seat mode.
• FLIP-FORWARD BUCKLE PAD: Stays out of the way for easy boarding.

Specifications

• Dimensions: 25"H x 20.5"D x 19.5"W
• Product weight: 30 lbs.