InfaSecure Vario II
From lower shoulder marker, up to upper shoulder marker (~4 to 8 years).

Pros / Cons
Pros
- The 43 cm shell is useful for three-across planning and tighter rear benches.
- An adjustable headrest and integrated belt path help maintain belt positioning as the child grows.
Cons
- A booster relies on the child staying upright and correctly positioned; age alone is not enough.
- Measure shoulder-marker fit and buckle access in the vehicle before committing to a narrow-seat layout.
Product Facts
- Seat Use
- Booster
- Product page
- Open product page
- Price/Buy
- Check price at Amazon
Shortlist the InfaSecure Vario II when your child has outgrown a harnessed seat but the car still needs room: this is a narrow high-back booster with a 43 cm shell, for children from about four to eight years, that keeps side support and a guided lap-sash belt path while leaving space for other restraints across the bench. The tradeoff is inherent to every booster: protection now depends on your child staying upright and correctly positioned for the whole trip, and age alone does not prove readiness. Before buying, check the fit in your actual vehicle - confirm your child sits between the shoulder-height markers, that the lap-sash belt routes correctly through the integrated path, that the child can reach the buckle themselves, and that the vehicle headrest does not push the head forward. If your child slumps or fidgets the belt off the shoulder, stay in a harness longer.