Swandoo Charlie i-Size (2026)

Charlie is Swandoo's award-winning i-Size high back booster seat, built to carry your child all the way from around 3.5 years to roughly 12 years old (100–150 cm, up to 55 kg). Certified to the latest i-Size UN R129/03 regulation, Charlie earned top marks in European consumer testing — including a 5-star side-impact rating, the best ever recorded in its category.

Delivery: free to UK mainland and Northern Ireland, or collect free from Towcester, Rayleigh or our Belfast fitting day – with free fitting included.

Book your free fitting

Grows with your child

• Gro-Wing automatic width adjustment — the side wings expand automatically (43 cm up to 51 cm) as your child grows past 135 cm, keeping the internal space roomy and comfortable at every stage.
• 11-position adjustable headrest — quick, easy height changes from toddler to pre-teen.
• Fuss-free seat belt routing — designed to prevent misrouting, so children can learn to buckle themselves in safely and confidently.

Safety first

• Certified to i-Size, ECE R129/03
• Continuous side protection plus the included Side Impact Buddy for extra protection on the window side
• Eye-level indicator for correct positioning
• Paramedic Wristband included — stores essential health information that stays with your child
• Installs with or without ISOFIX, so it fits virtually any vehicle

Cool, calm and comfortable

Ventilation holes and highly breathable, Oeko-Tex Standard 100 certified fabrics help regulate body temperature on long journeys. Covers are machine washable at 30°C. An ergonomically designed armrest is available as an optional accessory.

Specifications

• Child height: 100–150 cm (approx. 3.5–12 years)
• Maximum child weight: 55 kg
• Seat dimensions: 61 × 43 × 58 cm
• Seat weight: 6.7 kg net (9.5 kg gross)
• Certification: i-Size, ECE R129/03
• Forward-facing installation only

What's in the box

• Charlie i-Size booster seat in your chosen colour
• Side Impact Buddy
• Paramedic Wristband
• User manual and fabric tool

Every Charlie comes with Swandoo's free lifetime warranty (registration required) and accident replacement guarantee. Designed and engineered in Vienna.