Description: Easy to grip and absorb sweat without slipping, thickened about 2CM elbow pad, cares for your knuckles. The Plank Trainer makes your exercise more safely. Enhance body coordination, strengthen the transverse abdominal muscles, support the side kick knee, practice arm fat, exercise pectoral muscles, back muscles, shoulder muscles, arm muscles, etc. Specification: Name: Plank Trainer Product packaging size: 52x29x6cm Gross weight about: 750g Main body size: 320x460x180mm Material: ABS, TPR Adjustable Size Approx.: Shortest Wheelbase: 46cm Longest Wheelbase: 51cm Grip diameter about: 3cm Grip height: 14.5cm Foam thickness about: 1cm Base thickness about: 3cm Timing range 00:00-99 minutes 50 seconds Timing: Press and hold the minute key and the second key at the same time to reset to 00:00, press the start stop key to start timing, press the start stop key again to start timing; there is no age reminder in the positive timing state Countdown: Press the minute and second keys at the same time to reset to 00:00, press the minute key and second key to set the time; press the start/stop key to start timing, when the time reaches the bell ringing for 30 seconds, you can press any key to stop Packing List: Plank Trainer x 1