Maxi-Cosi i-Size convertible car seat provides secure, long-use protection for children from about 15 months to 12 years (9–36 kg). It features ISOFIX with top tether, a five-point harness, and forward-facing installation. Side impact protection, a removable washable cover, height-adjustable backrest and headrest, multiple recline positions, ventilation, and belt pads enhance comfort and safety as children grow.