Bulk up your biceps each time you grab a workout bar with the BILLZAN Bicep Bomber. Consisting of a webbed nylon belt, a thick, over sized neoprene neck pad, and dense elbow pads, the Bicep Bomber isolates your arms and shoulders while you perform dumbbell or barbell curls. Uniquely contoured rigid metal design allows you to isolate your arms and shoulders while keeping your back and elbows locked in the perfect curling position. The strap features a quick release to adjust it to the perfect position. The straps are secured with double rivets for extra security. BILLZAN Portable Preacher prevents your arms from moving at the shoulder joint stopping any cheating or momentum from being incorporated in the movement and holding your arms firmly in the correct position. This encourages a quicker, fuller pump (blood flow to the bicep) and total muscle fatigue, both being key factors in stimulating maximum muscle growth.