Booster type: High back.

Weight: 22 to 40 lbs.  with protection shield. 40 to 110 lbs. as high back booster.

Price: $250

IIHS rating: Best Bet.

NHTSA ease of use rating: Three out of five stars (both modes).

Pros: Side impact protection (wings are adjustable), LATCH connectors. Can be used with kids as small as 22 lbs.

Cons: No backless mode. Pricey. May take some getting used to the protection shield.

Comments: German car seat maker Kiddy is well known in Europe, but this is their first effort here in the US. The World Plus features an unusual front energy-absorbing shield, which works from 22 up to 40 lbs. After removing the shield, the seat becomes a belt-positioning booster that work up to 110 lbs. The World Plus features multiple headrest positions, integrated LATCH connectors, deep side wings for side impact protection and more.

At $250, this seat is very pricey. Initial reaction from readers has been positive, although several noted the front shield takes some getting used to (most combo boosters in the U.S. have a five-point harness). This seat earned a Best Bet rating from the IIHS, although it only scored three out of five stars for ease of use from the NHTSA.

The downsides, besides the price? Well some folks are disappointed in the seat’s side impact protection—yes, it is there but not as deep as other boosters on the market.  FYI: Even though Kiddy touts these seats are designed in Germany, they are actually manufactured in China. 

Let’s talk about Kiddy’s customer service: it leaves a lot to be desired. The company charges hefty restocking fees if you want to return this seat (Kiddy sells it directly via Amazon).

While we like this seat, we think Kiddy’s other U.S. model (the CruiserFix Pro) is probably a better (and more affordable) bet for toddlers that have outgrown their convertible seats.

Rating: B+