Fat Gripz - The Ultimate Arm Builder (2.25&rdquo; Diameter, Most Popular, Original, Blue) BUILD ARM SIZE AND STRENGTH - Fat Gripz will help you build bigger, stronger arms. They work by wrapping around barbells, dumbbells, cable attachments and exercise machine handles and increasing their diameter TIME-TESTED METHODS, NEW SCIENCE - Science has now confirmed what athletes and bodybuilders have known for decades - that using a thicker diameter bar causes much greater muscle activation in the arms which leads to incredible size and strength gains. TRAIN LIKE THE BEST - Fat Gripz are used by many: NFL players, champion bodybuilders, Special Forces soldiers, UFC fighters and Crossfit athletes. Click on the video (in the photo slide show on the left of this page) to see Fat Gripz in action. MILITARY-SPEC MATERIAL - The result of years of refinement of design and materials, Fat Gripz are as tough as your most intense workout so you will never need to replace them. The bevelled ends mean that they will even fit even the angled E-Z bars. GREAT VALUE - Grab your pair today - they cost less than a bottle of protein powder and will help you build muscle and strength for a lifetime. MADE IN USA.