Ab Roller Wheel for Abdominal & Core Strength Training, Ab Wheel Roller with Knee Pad for Abs Workout, Beginners, and Advanced Abdominal Core Strength Training (Orange) 颜色:BLUE Multi-Layer Material: Our roller wheel

Multi-Layer Material: Our roller wheel is made with multiple layers of material

damping layer

no need to clean up the mosquito zapper

and other pesky flying insects

Ab Roller Wheel for Abdominal & Core Strength Training, Ab Wheel Roller with Knee Pad for Abs Workout, Beginners, and Advanced Abdominal Core Strength Training (Orange) 颜色:BLUE Multi-Layer Material: Our roller wheelAbdominal Exerciser: Unlike other AB rollers, we have added thickened rubber tracks to the wheels to reduce friction on the floor, which is quieter and not hurt the floor. Widened the wheel(4. 1 INCH), automatic rebound; triangular structure, stable and safe and ergonomic Eohmay Quick Start & Beginner Friendly: The double spring strong rebound design targets your abdominals, hip flexors and back muscles. Automatic rebound function and thick foam