Soft Touch 3 Base Set includes: (3) 15" Bases, (3) Convertible tees. Dinmensions: 15" x 15" x 3". The convertible tee provides safety by using a "pop off" tee to prevent injury. These bases provide the ultimate in safety, installation and ease of maintenance. Bases can remain in ground for a full season of play. Wide base opening allows for easy removal of dirt.