Info per Graco website:
Dates Produced: 2009 through July 2013
Models Affected: Toddler Convertible Car Seats: Cozy Cline, Comfort Sport, Classic Ride 50, My Ride 65, My Ride 70, My Ride 65 with Safety Surround, Size4Me 70, My Size 70, Head Wise 70, Smart Seat. Harnessed Booster Seats: Nautilus 3-in-1, Nautilus Elite and Argos.
Solution: Graco offers a new and improved replacement harness buckle to affected consumers at no cost. If you are experiencing difficulty with your harness buckle and cleaning has not improved its performance, please contact our Graco customer service team at 800-345-4109 (Monday through Friday from 9 a.m. until 5 p.m.) or firstname.lastname@example.org.