Kids are getting bigger and we are selling our Britax Pinnacle convertible booster. Britax Pinnacle Clicktight- Black. Date of Mfr. July 16, 2015. Expires July 16, 2024. Exceptional condition - barely used - $200 Seat is clean, has not been in any accidents, and there are no recalls posted on the manufacturer's website. (Britax.ca) Built extremely well and the clicktight on the is a god send for installation.