Diono Olympia Convertible Plus Booster Car Seat
By: Diono

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Diono is the only car seat brand that offers convertible + booster seats with a full steel frame making them one of the safest car seats available today. The New Diono Olympia is the ultimate in car seat safety with new deeper side walls providing enhanced side impact protection taking Diono car seats to a whole new level. With its extended rear-facing capabilities, it can comfortably seat rear-facing children from 5 to 45 lbs and forward-facing children from 20-70 lbs in 5-point harness mode. Additionally it converts to a booster for children between 50 - 110 lbs or up to 57"" in height. Its unique SuperLATCH system makes installation easy and the Olympia is NCAP crash tested, the industry benchmark for verifying child seat performance in severe accident conditions.


  • Designed with Safety Synergy technology, a multi-system integration that maximizes total performance and safety
  • Industry leading 12 year product life
  • Fits 3 across in a mid-size vehicle with its space saving design offering the most generous interior space
  • Full steel alloy frame and aluminum reinforced sides for unmatched strength
  • Reinforced deeper sidewalls lined with energy-absorbing foam give Olympia superior head and body protection
  • Memory foam padding for extra comfort
  • Sits low on vehicle seat for easy child boarding and improved safety performance in a crash
  • Folds flat for travel and storage
  • Only brand of car seats with SuperLATCH: with the Strongest Connectors and Secureweave™ webbing it provides an easy and secure installation
  • Meets FAA standards for air travel
  • Extra-long leg support for comfy road trips and multiple harness and buckle positions for custom fit
  • Rear-facing tether capability
  • Additional forward-facing recline position to accommodate different types of contoured vehicle seats
  • SafeStop energy absorbing harness
  • Anti-slip rubber seat grips
  • Care: Hand wash or machine wash only in front loading machine. Line dry or tumble dry on low temperature


  • Rear-facing capacity: from 5 to 45 lbs
  • Forward-facing capacity in a 5-point harness: from 20-70 lbs (up to 57" in height)
  • Booster mode weight limits 50 - 110 lbs (up to 57" in height)
  • Product Dimensions Open 28.5"H x 17"W x 16"D
  • Product Dimensions Folded 28.5"H x 17"W x 7"D
  • Weight with base 27.4 lbs.

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Graphite UPC: 677726301102 Model: 30110

Shadow UPC: 677726301201 Model: 30120