Preferred Material ----- Multifunction Timing Plank Trainer provides more stable support and safe exercise, it also provides comfort for your arms, and makes you more "inclined" when doing plank exercises. Safe and Secure ----- Multifunction Timing Plank Trainer is designed for angular mechanics triangle, positive timing, and countdown design, you can plan your exercise time reasonably, monitor in real-time, and control the exercise time yourself. The counting design uses a button battery, model LR1130. Comfort Grip ----- Plank Trainer With Timer Angular mechanics triangle is made with TPE soft grip, comfortable foam grip, easy to grip, comfortable training, patented design, and contoured cushion give you personalized support by relieving joint pressure. Adjustable Angle ----- Timing Plank Trainer Contract your abdominal muscle through a full range of motion and keep your back from arching. Whole-body movement makes exercise more effective. Great Gift ----- Give Multi-Function Plank Trainer as a gift to your friends or share it with people who want to exercise will greatly promote the fitness of people around.