FLYBIRD upgraded ab machine features a unique bottom-up movement that deeply stimulates belly fat, strengthens core, and better protects your neck/back than traditional training—ideal for toning waist, abdomen, arms, back, legs and hips. With 4 incline angles + 5 adjustable heights, it suits all fitness levels from beginner to expert, letting you customize workout intensity. Made of premium commercial steel with a triangular dual-track frame, it supports up to 330 lbs for outstanding stability. Built-in wheels ensure smooth, quiet sliding; 1.18-inch thick foam cushion and non-slip handgrips offer comfortable protection for knees and elbows. 90% pre-assembled (only 4 steps to finish), it’s foldable for space-saving storage. The LCD monitor tracks repetitions, workout time and calories burnt to help you plan exercises. Backed by 1-year frame warranty and 30-day parts coverage.