So you are thinking about ordering full-size custom basketballs, but want to make sure you buy the right size? This guide will help you quickly find the top sellers for the size you need for your team or event. There are several different "regulation" sizes, so it's important to check with your league first to verify the official size which is acceptable for use in league play. However, not all basketballs are intended for gameplay, nor are all custom basketballs needed for league play. Most promotional basketballs are not tournament quality, so be sure you are getting a tournament quality ball if that is what you need. And remember, "Official NBA Size" doesn't mean "NBA Quality." The Official NBA Spalding Game Basketballs actually cost around $140! That's why you can't expect that same quality if you are buying a $20 basketball. Nonetheless, there are many great quality basketballs available to brand with your company or event logo. Below you'll find the most popular choices!