Description:Easy to grip and absorb sweat without slipping, thickened elbow pad about 2CM to protect your knuckles. Plank Trainer makes your workout safer. Enhance body coordination, strengthen transversus abdominis, support side kick knees, practice arm fat, exercise chest muscles, back muscles, shoulder muscles, arm muscles, etc.Specifications:Name: Plank support trainerProduct Packing size: 52x29x6cmGross weight about: 750gMain body size: 320x460x180mmMaterial: ABS, TPRAdjustable size about:Shortest wheelbase: 46cmLongest wheelbase: 51cmGrip diameter: 3cmGrip height: 14.5cmFoam thickness: 1cmBase thickness: 3cmTimer range 00:00-99 minutes and 50 secondsTiming:Press and hold the minute key and the second key at the same time to reset to 00:00, press the start and stop key to start timing, and then press the start and stop key to start timing; there is no age reminder in the positive timing stateCountdown:Press the minute and second keys at the same time to reset to 00:00, press the minute and second keys to set the time; press the start/stop key to start timing, when the time reaches 30 seconds of ringing, you can press any key to stopPacking list: Plank Trainer x 1Note:Please allow slight tolerances on size due to manual measurement, and lighting in photography may cause colors to differ from real life.