HEAVY DUTY CONSTRUCTION-There is a Heavy Metal Buckle for Clip that goes with the bicep blaster aluminum build, which keeps the belt secure and fits any sized body. LONG TERM STABILITY AND USAGE- Before BX Gear Arm Blaster Traditional Bicep Blasters start bending and breaking down due to heavy weight and usage. However, our Bicep Curl Support boasts a thick gauge aluminum, strong rivets, padded and adjustable nylon belt to provide you greater stability for more efficient workouts. PROFESSIONAL UNIQUE DESIGN- Our contoured rigid metal design isolates your arms and shoulders, acting as great arm supports. The padded neck strap is quick release so you can to adjust it to the perfect position. With the addition of elbow pads, our blaster reduces unnecessary stress put on arms when performing curls. COMFORT SECURE FIT- Carefully designed with continuous research by fitness experts, customer’s demand and satisfaction research with Advanced Neoprene Padding for Secure Comfort Workout. MUSCLE ENHANCEMENT- This increases the size of the muscles used without causing quick fatigue. Used to enhance bicep curls, allows user to build lean and big muscle .