Double Ab Wheel Roller Set Muscle Trainer Home Exercise Fitness Equipment - Blue Features: High strength and elastic tensioner strap, sturdy and durable PP and ABS flexible roller wheels with hard PU cover and hand rack EVA skidproof kneeling board in large size for high load bearing Five different training levels for your choice to achieve the maximum body fitness Up to 40 species exercise style, workouts for your chest, back, arms, shoulders, and abs Lightweight with a storage sack for easy carry, convenient to exercise at home, office, or gym Specifications: Material: PP & EVA & ABS Weight: 1450g/51.1oz Wheel Diameter: 12cm / 4.7in Package Included: 1 x Muscle Trainer