Infa Secure Lockie Seat Retainer. Lockie can be used with all child restraints that feature an internal harness. Do not use this product with a Booster Seat, an Accessory Child Harness, or a Convertible Booster being used in Booster Seat mode.
Lockie is designed to be used with the majority of vehicle seat belts, however there may be a small number of vehicles for which it is not compatible.
Features:-Keeps seatbelt installations nice and firm-Extremely easy to fit (and re-fit)-It is used in conjunction with a harnessed car seat and vehicle seatbelt to prevent the seatbelt installation from loosening over time.-Lockie is much easier to use than other kinds of seatbelt locking clamps, clips and buckles.