SERIOUS GAINS when increasing the diameter of your grip. This has been proven to activate more muscle fibres, which accelerates strength and significant size improvement in your forearms and biceps. INSTANT THICK BAR, easily place these grips around standard dumbbells, barbells, cable or equipment of choice to drastically increase equipment diameter. MATERIAL of these bar grips is ultra-durable high density silicone. Meaning they won’t slip or misshape compared to poorer quality alternatives. Dimensions: 9.8cm x 4.7cm IMPROVED COMFORT, Fitness Mad Mega Bar Grips help to alleviate wrist, elbow and other joint pain. They increase your strength, make your muscles work harder and reduces load from tendons. THE MAD GROUP are well known suppliers of fitness accessories to Studios, Gyms and Home Gyms worldwide. A UK company with a name you can trust! Fitness Mad Mega Bar Grips Thick Bar Grips Dumbbell Grip Barbell Grip Thick Bar Adapter to Strengthen Biceps and Forearms | Weightlifting Bar Grip for Improving Climbing and Grip Strength - NMQIBAS1