Feature: 1. Strengthen Muscle: Ergonomically designed to strengthen local muscle strength, correct sports posture and shape the muscular curves of the upper limbs. 2. Timing Display: Workout plank core trainer comes with a timing display screen to help you control the length of your workout with precision. 3. Slip Resistant Handle: Core trainer with non slip grip design and thickened support foam to provide you with a comfortable fitness experience. 4. Angle Adjustable: Fitness plank core trainer has adjustable angles and widths to meet different needs and is universal for people of different body types. 5. Portable Design: Plank board trainer is small size, light weight, which can be carried around, saving storage space, suitable for the gym, home use. Specification: Item Type: Core Trainer Material: Alloy aluminum, ABS Battery: 1 x LR1130 (not included). Package List: 2 x Grip1 x Timer1 x Elbow Pad