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BeSafe iZi Flex Fix i-Size

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Safety and flexibility combined
Height range: 100 cm to 150 cm
Age approx: 4 to 12 years (Disclaimer)

BeSafe iZi Flex FIX i-Size: high back booster seat for children 100-150 cm tall, combining excellent safety features, high standards of comfort and flexible solutions to enable easy adjustments and installation, and space for up to three people in one row.

ADAC BeSafe iZi Flex FIXIn the Spring edition of the 2018 consumer test, the German test institute ADAC confirmed iZi Flex FIX i-Size’s performance by giving it “Good” scores in all tested categories. It is the only seat in the test that managed to combine an outstanding side impact score of 1,2 with great results in “space for the child” and “space usage in the car”, making it the ideal combination of safety, comfort and space flexibility.

First booster car seat to meet new safety demands

Winner of the prestigious Kind + Jugend Innovation Award in the ‘World of Travelling Kids’ category

BeSafe welcomes the updated UN R129 car seat standard by presenting the first booster seat on the market that fully complies with the new safety requirements. The new BeSafe high-back booster seat provides significantly stronger traffic safety, by protecting the head and body. The car seat won the prestigious Kind + Jugend Innovation Award, in the ‘World of Travelling Kids’ category.


  • Compliant with new UN R129-02 regulations
  • Pad+ designed for additional chin and chest protection
  • Locked position for ISOfix installation
  • Side impact protection (SIP+)
  • Shoulder and hip belt guider for proper position


  • Headrest designed for side visibility and sleeping support
  • Height adjustment to grow with the child
  • Pad+ softens the seat belt for added comfort
  • Reclining functionality
  • Integrated handle for easy carrying

Space flexibility

  • Slim – but still plenty of space
  • Removable side bumpers to allow up to 3 seats in a row

Technical information

  • i-Size booster seat for stature height 100 cm – 135 cm
  • Specific vehicle booster seat for stature height 135 cm – 150 cm

Height range: 100 to 150 cm
Age: approx. 4 to 12 years

Car seat weight: 7 kg
Dimensions (cm): 42L x 52W x 64H (incl. SIP bumpers / lowest position)
Width without SIP bumpers: 44 cm
Height in highest position: 82 cm

BeSafe has developed car seats for more than 50 years. A lot has changed over time, but our focus has always been the same: your child’s safety. In this matter, we will never be satisfied, as we strive to always deliver and exceed safety demands. We are constantly developing new innovations to make our products even safer and more user-friendly.