Arm Strength Fitness Exerciser Muscle Workout System Grip   Features‎:‎ ‎- Made of rubber material‎,‎ wear resistant‎,‎ durable and practical ‎- Help you get rid of flabby problem in the area under your arms ‎- The band slot is easy to attach and not easy to fall‎,‎ a great tool for exercising arms ‎- 3 interchangeable resistance bands‎,‎ 15lb‎,‎ 20lb and 25lb perfect for all fitness levels ‎- Shoulder‎,‎ bicep‎,‎ back‎,‎ tricep and chest exercises making every muscle in perfect training ‎- Make your muscles toning and tightening as you burn calories without joint strain ‎- With ergonomic hand grip and comfortable padded arm rest‎,‎ harmless to your arm How to Use‎:‎ 1‎.‎ Swing outer arms up into open position‎.‎ 2‎.‎ Choose a resistance band based on your skill level‎.‎ 3‎.‎ Insert resistance band slots‎,‎ ensure that band is securely in place and laying flat‎.‎ 4‎.‎ Grab hand grips and place arm rests on your forearms‎.‎   Application‎:‎ Breaststroke Abdomen Trainer Function‎:‎ Arms‎,‎Body   Package weight‎:‎ 0.718 kg Product Size‎(‎L x W x H‎)‎‎:‎ 24.50 x 20.50 x 5.50 cm / 9.65 x 8.07 x 2.17 inches Package Size‎(‎L x W x H‎)‎‎:‎ 27.00 x 22.00 x 10.00 cm / 10.63 x 8.66 x 3.94 inches Package Contents‎:‎ 1 x Arm Strength Grip‎,‎ 3 x Band‎,‎ 1 x English Manual