Arm Trainer 40-100lb Adjustable Power Twister Bar – Chest & Arm Workout Equipment Portable with

### Core Product Features：
1. **Full-Body Muscle Activation System**
Precision-engineered U-shape design targets 15+ muscle groups simultaneously:
Chest & shoulder sculpting ✓ Arm definition (biceps/triceps) Core strengthening
Back muscle engagement ✓ Leg & thigh conditioning ✓ Wrist stability training

2. **Smart Resistance Customization**
4-stage resistance system (40-100lbs) with instant adjustment mechanism
Beginner-friendly settings ➔ Advanced athlete modes
Progressive overload capability for continuous strength gains

3. **Commercial-Grade Construction**
Military-grade steel springs with triple-layer protection:
Anti-rust leather casing 2. Shock-absorbent buffers 3. Reinforced connector joints
500,000+ cycle tested durability

### Why Choose Our Fitness Trainer
**Space-Saving Gym Alternative**
Detachable design fits in backpacks/laptop bags
Office desk ➔ Hotel room ➔ Outdoor park ready

**Ergonomic Safety Design**
360°anti-slip grip system with memory foam handles
Pinch-proof spring covers
Real-time force feedback monitoring

**Scientific Training Ecosystem**
Includes：
Visual exercise poster
Progressive 8-week workout plan
Muscle recovery guide

### Application Scenario:
Home shaping, exercise, rehabilitation, office relaxation, travel, fitness

### Target Audience:
Fitness novices, strength trainers, fitness coaches, middle-aged and elderly users

### Training Effect:
Say goodbye to accessory breasts/butterfly sleeves to enhance boxing explosiveness, improve core stability, and enhance joint flexibility

### What Makes Us Different
3D Muscle Activation Technology
Cross-Training Compatibility

### Technical Specifications
Material：grade aluminum alloy
Resistance Range：40-100lbs
Product Dimensions：28×18×6cm
Max User Weight：330lbs
Multi-Functional Arm Trainer for Full-Body Strength Training：​ Achieve precision workouts for chest, arms, shoulders, back, thighs, and abs with our adjustable arm trainer. Designed as a portable gym alternative, it combines the versatility of a thigh master, forearm strength trainer, and chest exerciser, delivering upper body muscle definition in just 10 minutes per session​
Smart Adjustable Resistance (40-100Lbs) for All Fitness Levels：​ Featuring 3-stage resistance control and detachable spring bars, this professional-grade strength training equipment adapts to beginners or athletes. Train triceps, biceps, and chest muscles with precision—perfect for arm wrestling preparation or home-based abs machine workouts​
Durable & Portable Home Fitness Equipment with Ergonomic Design：​ Built with high-strength metal springs and anti-slip foam handles, our ergonomic arm trainer ensures safe, stable workouts. Compact and travel-friendly, it doubles as outdoor workout equipment for wrists, thighs, and core—ideal for office, gym, or on-the-go functional training​
Pro-Grade Chest Workout Equipment with Training Guidance：​ Includes illustrated workout posters for chest expander routines, arm trimming techniques, and thighmaster exercises. Target “flabby arms” or build power bar endurance effortlessly—no bulky chest press machine required. A must-have suspension trainer for men and women​
Satisfaction-Guaranteed Muscle Builder with Lifetime Support：​ Backed by a hassle-free warranty, this arm trainer is your ultimate home gym upgrade. Whether for ab machine sessions or forearm trainer drills, experience commercial-grade results with our space-saving, adjustable ab trainer