The bicep blaster was popularized by the great Arnold Schwarzenegger and helped to build his amazing bicep peaks. You can see it being used in many of his vintage training videos. The bicep blaster straps over your neck and rests against your chest, so that you can place your elbows against it while performing bicep curls. This keeps the elbows from swaying, resulting in very a strict technique that places all of the resistance upon the biceps.
The RAD Arm Blaster is made of high quality materials, and has added padding for the elbows and neck to ensure comfort throughout the exercise.