They will fit any of the Graco Slim Stacker highchairs. Also compatible with the following Graco high chairs 5 point safety harness seat belt. Your original harness may have been another color. These attach to the plastic high chair seat.
Graco Slim Snacker High Chair Review
Slim Snacker™ Highchair
Graco Slim Snacker High Chair - Little Beach Bum - Baby Gear Rentals
Baby High Chair Seat Safety Strap 5 Point Harness Replacement
Graco Slim Snacker High Chair, Ultra Compact High
Graco Slim Snacker High Chair Cover Removal (Graco High Chair
Graco Slim Snacker Highchair - Stratus
Graco Slim Snacker High Chair
Graco Slim Snacker High Chair Review
Baby High Chair Seat Safety Strap 5 Point Harness Replacement
Slim Snacker™ Highchair
VERY GOOD CONDITION - Graco Slim Snacker 2-in-1 High Chair - Whisk
Graco Slim Snacker Highchair, Atg Archive
Graco Made2Grow 5-in-1 High Chair - Hudson