Lockie

Lockie is a seatbelt positioning device designed to be extremely easy to use.
Use the device in conjunction with a harnessed car seat and vehicle seatbelt. This will prevent the seatbelt installation from loosening over time. Installation is a breeze, by simply pushing the keel into seat belt buckle. This means it’s much easier to use than other kinds of seatbelt locking clamps, clips and buckles.
 
Lockie was designed right here in Australia! And in 2017 awarded the Australian Good Design Award.