Contoured Design. The 24" 5mm-thick light aluminum frame with a curved pattern design conforms to all body shapes and sizes, for comfy and safe lifting of heavy weights with barbell and dumbbell setsCustom Fit. Rest the back of your arms on the arm blaster's sponge pads to keep proper form and posture when doing bicep curls. A heavy-duty steel buckle on the neck strap allows for easy adjustmentsConstant Comfort. The neck strap features soft neoprene padding to protect against chafing and rashes, while non-slip foam padding on the biceps blaster gives comfort and stability through heavy usePower Workout. Supercharge your strength training. Isolate your triceps and biceps while keeping them locked in place when performing arm and shoulder workouts with a barbell or heavy dumbbell setsStrong and Sleek. The biceps bomber sports an all-black look with a classy logo that complements any workout ensemble. Black rivets secure each side of the neck strap to the frame