When To Switch To Booster Car Seat

switch to
1) For the offensive and defensive players to switch roles; this is possible only between balls or during time-outs.

car seat
A car seat is the chair used in automobiles. Most car seats are made from cheap, but durable materials, made to withstand as much beating as possible. The material for these seats is usually used for the back of the seat, as well as the part where one's posterior goes.
Soup is the second album by the American rock band Blind Melon, released shortly before vocalist Shannon Hoon's fatal drug overdose, making it his final album with the band. Thematically, the album is much darker than the band's multi-platinum debut.
a seat in a car

booster
A person or thing that helps increase or promote something, in particular
A source of help or encouragement
supporter: a person who backs a politician or a team etc.; "all their supporters came out for the game"; "they are friends of the library"
A keen promoter of a person, organization, or cause
promoter: someone who is an active supporter and advocate
a thief who steals goods that are in a store