Maxi-Cosi Tanza Belt-Positioning High-Back Booster Seat – Foldable – Sea Shadow

The Maxi-Cosi Tanza Belt-Positioning Booster Car Seat is built for comfort, convenience, and child passenger safety as your little one grows. Designed for kids 40–100 lb and 43.4–57 inches, this high-back booster seat offers 10 adjustable headrest positions plus backrest support, while rigid LATCH connectors give a simple, secure install. A compact, foldable design and built-in carry handle make this portable booster easy to store and take along, and an included carry bag keeps it together. Crafted with EcoCare, our premium 100%-recycled fabric made from plastic bottles, it is soft and breathable, and the PureCosi fabrics are made without added fire retardant treatments. The foam seat pad and cushions are machine-washable and dryer-safe, and a removable cup holder is included. Tanza was engineered and tested to meet or exceed federal safety standards. Designed by Parents, for Parents. Maxi-Cosi embraces both heritage and innovation. We invented the car seat category in Europe over 40 years ago, and have earned the trust of parents worldwide, safely carrying over 60 million babies home from the hospital. Our infant carriers, convertible car seats, strollers, at-home, and nursery products are designed with solution-focused features to make families’ lives easier. All Maxi-Cosi products meet or exceed the ASTM International (American Society for Testing and Materials) and governmental safety standards—your family’s safety always comes first. Many of our premium products, including all Maxi-Cosi cribs, are Juvenile Products Manufacturers Association (JPMA) certified. We take great care to create each product with thoughtful details like machine-washable and dryer-safe fabrics and generous cup holders that fit into your life and make your everyday parenting journey easier. We’re committed to impeccable style and comfort. Our design-forward, trend-right play yards, bassinets, swings, rockers, and more complement your home’s décor while our premium materials ensure your little one’s comfort.
Packs Up for Travel: A built-in carry handle and compact folding frame turn this Maxi-Cosi Tanza belt-positioning booster in Sea Shadow into a portable seat on the move
Rigid Latch Connectors: LATCH hardware clicks into the vehicle’s lower mounting points easily for a secure fit, and moving the booster between cars takes moments
Grows Through the Years: Ten adjustable headrest positions plus a supportive backrest keep this high-back booster seat fitting kids 40-100 lb and 43.4-57 inches tall
Wash & Dry Seat Pad: A machine-washable, dryer-safe foam cushion makes cleanup easy, and the removable cup holder lifts out when sticky spills land mid-journey
Trusted & Tested: Engineered and tested to meet or exceed federal safety standards

Customers find the car seat’s quality great and appreciate that it’s easy to install. However, the safety features receive mixed feedback, with some customers finding it safe while others disagree. Moreover, durability is a concern, with several customers reporting that it broke.