XTEP Ab Wheel Roller Four-Wheel Automatic Rebound Abdominal Muscle Trainer with Elbow Support and Assistance for Men and Women Fitness Equipment

Double precision steel springs for powerful rebound and automatic return to starting position

High load capacity up to 600 jin (~300 kg), tested with real users including double standing

Thickened and widened elbow pads with 100% increased surface area for better arm fit and comfort; multi-layer, sweat-absorbent, anti-slip, breathable materials to protect elbows during prolonged use

Precision steel eight bearings for 30% faster speed and smooth 360° rotation

Six-layer composite structure including noise reduction, anti-slip, shock absorption, and reinforced support layers; protects floors and reduces noise

Deepened anti-slip texture on wheels with elastic and flexible rubber-coated hubs to prevent slipping and floor damage

Built-in phone holder compatible with mainstream phone sizes, front-positioned to protect neck and allow entertainment during workouts

Easy installation with snap-on elbow supports for quick and effortless assembly

Training guide with progressive levels (beginner, intermediate, professional) including recommended repetitions, sets, intervals, frequency, and training cycles targeting abdominal, waist, hip, shoulder, and arm muscles

Data from smartphone app is for reference only

Suitable for users of various fitness levels with gradual intensity increase recommended

Designed to improve abdominal crunch efficiency and overall muscle strength