Baseball Inflates (One Dozen) by CarnivalSource.com! Hit a home run with these inflatable baseballs. Give them away as party favors at your next sports-themed event or throw them in the pool for some added fun; these inflates are great for land or water. Find more great items like this in our Baseball Party Supplies category here at CarnivalSource.com. Baseball Inflates (One Dozen) by CarnivalSource.com are perfect for your next sports themed event! These vinyl inflatable baseballs are 12 inches when inflated and feature a white baseball design. Perfect for ages 3 and up, these inflatable baseballs can be used in the pool or on land. Ships from Missouri warehouse within one business day. Shop our Baseball Party Supplies category for more great items!