Safety 1st Summit 65 harnessed boosterBooster type: Combo

Weight: 22-40 lbs. with harness, 40-100 lbs. as belt positioning booster.


IIHS rating: Not recommended.

NHTSA ease of use rating:
65 Booster mode: Three stars out of five.
65Harness mode: Three stars out of five.

Pros: EPP foam.

Cons: Top harness slots is too low.

Comments: The Safety 1st Summit 65 is a rather dated booster seat from the mid 2000’s that features a with a harness that works to 65 lb. and then to 100 lbs. as a belt-positioning booster. In recent years, Safety 1st refreshed this model with a new headrest and base with pop-out cup holders.

Since other combo boosters can top $200, is the Summit 65 a good deal? Well, no. The big disappointment with this seat is that the top harness slots are no higher than an average convertible, about 15.” That’s too low, in our opinion. So while some kids can use this seat to a full 40 lbs., many will outgrow it by height before weight. It also comes with the fussy Cosco tether adjuster, which requires two hands to adjust—and led the NHTSA to five this seat just two out of five stars for ease of use in harness mode.

Another negative: this seat earned a “Not Recommended” rating from the Insurance Institute for Highway Safety, which is rare.

While we realize this seat does have its fans, there are other combo boosters out on the market that work better than the Summit. This seat should have been retired years ago. Rating: D