J.T.
there is NO WAY a 2.5yo should be in a booster! PLEASE get him out of that thing ASAP. they MUST be in a 5pt harness AT LEAST until age 3, but pref MUCH longer than that. my 5.5 year old is still in a 5 pt harness and he wouldn't have it any other way. if you have an excessively large child, get a britax regent, that's what my 5.5yo is in with LOTS of room to grow, and my 2.5yo is in a britax boulevard. my two boys were in a rollover crash at 75mph last summer, buckled into britax boulevards, and walked away literally without a scratch - that day, we bought two brand new britax seats that afternoon, each worth EVERY BIT of the $300 they cost.