Dark gray and blue pants are for 6-12 months. Gray pants only are for 12-18 months. I received these as a gift, but I had so many and they were stored away, so my child outgrew them. ◆ I try to ship as quickly as possible, but I am raising a child, so please understand that shipping may take a little time. ◆ These items are inspected by an amateur, so please refrain from purchasing if you are very concerned about details.