These Britax Harness Booster seats have previously been awarded “check fit” ratings by the Insurance Institute for Highway Safety (IIHS). You can read more about this “check fit” rating .
The American Academy of Paediatrics recommends that children should remain in rear-facing seats until they are at least 2 years of age. In accordance with this advice, Britax states that the minimum age for use of their 5 point harness booster seats is 2 years and the minimum weight is 25 lbs.
Although I prefer the Pinnacle 90 and Frontier 90 seats, I appreciate that no everyone’s budget can stretch that far, especially if you have twins like I do or many children to buy car seats for! If you cannot afford to $267+ on a harness to booster seat, then the Britax Pioneer 70 is still a very nice car seat and I would much prefer my child to use one them than a standard seat-belt positioning booster.
The best 5 point harness booster seats avoid this serious problem altogether by enabling your child to remain harnessed until their weight exceeds 90 lbs. There is another model, the that is significantly cheaper ($172) but it only enables harnessed restraint up to 70 lbs instead of 90 lbs. The booster stage weight limit is also 10 lbs less (110 lbs vs 120 lbs).
Evenflo Chase LX Harnessed Booster Car Seat - Dunagan