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