Plank Support Trainer: This LCD display core trainer is to train the waist, abdomen and core muscles. : Our plank trainer is more safe for plank support. Design: Based on the traditional plank support, this abdominal muscle training device increase its stability and comfort, so as to exercise muscles. Smart: The plank trainer is adjustable to meet your needs, the smart timing can train time. The anti pinching hands design. Multifunctional: Perfect for plank support, one hand plank support, push up plank support training. type:D Colour:black Material:ABS+aluminum tube+NBR Package Contents: 1 x Plank Core Trainer with Timer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.