Question What 3 boosters in 3rd row 04 Sienna


New member
Today we were given full custody of a neighbor girl(long story).She's been spending weekends with us and will ride in a booster(she needs one). If my DH isn't with us it's no big deal,I just have DD1(15y old) ride in front and 4 other girls all outboard.When we all ride together it's a problem. 3rd row currently is DD3 TBSS passenger side,DD2 Cruz on drivers side. I bought a BB to try center but she doesn't find it comfortable. Without it I find the shoulder belt under her arm. If her mom doesn't straighten up this could be permanent so I need something long term.What seats will work so all 3 can buckle? I loved my old PW without armrests and I know there is a new booster out without armrests but it's pricy and might not even work.If need be I can force DD1 back there since she's skinny but we'll have a fight on our hands and she's tall.


New member
I don't know your vehicle, but in my Ody I can put a Vivo and 2 Harmony youth boosters. The Vivo is discontinued, but you might try switching out 2 seats for youth boosters. The Incognito might work well too. It's wider than the bubble bum but easier to use. What is your youngest riding in? While it's not ideal, I can put 2 youth boosters plus a Britax convertible and they puzzle really well.


New member
DD4 rides middle row behind passenger(seat is pushed next to other captains chair)in a RA50 RF. Since the kids climb in from passenger side if I put my RF back there she would have to go drivers side and she rides with me alone often so I really like her middle row.

At what point do you kick them out if a booster? DD2 is 10.5y old,4'11" and about 95lbs but she doesn't feel comfortable riding without her Cruz. We do have a Harmony Youth but she's too big. 11 y old fits but I can't buckle with Cruz,Youth and SS. My 10 y old is safety conscious so I would trust her in the Incognito but the 11 y old probably wouldn't use the clips.

Do you think Incognito drivers side,Youth or Cruz center,SS passenger side would work?


New member
Sorry,I meant to say she passes the 5-step test but also still fits well in her booster. She's not less safe in a booster even though she passes? I guess that should have been my question.
As long as the seatbelt still fits her correctly in the booster, she is not less safe (lap belt not too low down on her thighs or up on her belly, shoulder belt not falling off her shoulder).


New member
Sorry,I meant to say she passes the 5-step test but also still fits well in her booster. She's not less safe in a booster even though she passes? I guess that should have been my question.
No, she's not, but the goal is for *everyone* to be safe. Since she is safety conscious, you may be able to show her and explain to her that she is safe without it (boy, we rarely go that way around here! ;)) or convince her to try the Safety First Incognito. It really may work well for your situation. Also, I'm going to assume that since it's a new-ish Sienna, there is a moveable headrest where she sits...but you want to make sure that she has head support up to at least the middle of her head (top of her ears). If she fits the seatbelt properly and 5 steps without the booster and the tops of her ears are going over the headrest, I'd be inclined to try the Incognito or no booster.

The Incognito is only $20 on Amazon and very narrow at the back, but deep compared to a Harmony Literider backless booster (about as deep as the average seat in a car). It's made for kids/preteens over 60 lbs who still technically need a booster, but may not need quite as much of a boost as your average 7 or 8 year old.

I'm thinking may have more luck with the Incognito in the center, with the other seat being on the buckle side of it being a little bit taller (to make it easier to pull up the little plastic belt retainers for the lap belt).

Car-Seat.Org Facebook Group

Forum statistics

Latest member

You must read your carseat and vehicle owner’s manual and understand any relevant state laws. These are the rules you must follow to restrain your children safely. All opinions at Car-Seat.Org are those of the individual author for informational purposes only, and do not necessarily reflect any policy or position of Carseat Media LLC. Car-Seat.Org makes no representations as to accuracy, completeness, currentness, suitability, or validity of any information on this site and will not be liable for any errors, omissions, or delays in this information or any losses, injuries, or damages arising from its display or use. All information is provided on an as-is basis. If you are unsure about information provided to you, please visit a local certified technician. Before posting or using our website you must read and agree to our TERMS.

Maxi Cosi is a proud sponsor of Car-Seat.Org!Graco is a Proud Sponsor of Car-Seat.Org!

Please  Support Car-Seat.Org  with your purchases of infant, convertible, combination and boosters seats from our premier sponsors above.
Shop travel systems, strollers and baby gear from Britax, Chicco, Clek, Combi, Evenflo, First Years, Graco, Maxi-Cosi, Nuna, Safety 1st, Diono & more! ©2001-2020 Carseat Media LLC