The Second Prototype Boba Fett costume is often referred to as the Preproduction #2 costume, prepo 2 costume, or simply PP2 costume.
This costume was painted by Sandy Dhuyvetter's Daydream Productions who loosely used the First Prototype Boba Fett costume as a template.
This costume was heavily photographed for use in promoting the Empire Strikes Back. It is also the costume seen on the Kenner Boba Fett Action Figure packaging.