



Train smarter with Joy Sports Fitness U-Spring Chest Expander! Engineered to target 12+ muscle groups – chest, arms, biceps, shoulders, back, abs, and thighs – through precision resistance. Unlike traditional arm trainers, our 3-level adjustable spring bars deliver dynamic tension for customized workouts.
⚙️ Precision Engineering for Maximum Performance
- Triple-Layer Durability: High-strength metal spring core + leather protective sleeve + thickened anti-slip foam handles.
- Smooth Motion Control: Zero stalling during reps, preventing joint strain.
- 3 Resistance Levels: 50LB/80LB/120LB options adapt to beginners or athletes.
🌍 Portable Design, Anytime Fitness
Detach and pack in 10 seconds! Compact enough for office breaks, hotel rooms, or outdoor sessions. Follow the included training guide chart to sculpt muscle in just 10 minutes/day, 4x/week.
Joy Sports Fitness Company Profile

15+ Years of Manufacturing Expertise Trusted by E-commerce Leaders
Joy Sports Fitness has over 15 years of experience manufacturing high-quality fitness equipment and 8 years of specialized e-commerce service. We partner with top sellers on platforms like Amazon, Lazada, and Ozon, helping them succeed with our premium products and tailored support.
Why Choose Joy Sports Fitness?
- E-commerce Expertise: Optimized packaging, fast delivery, and reliable customer service.
- Custom Branding: Custom logo printing enhances brand visibility and customer loyalty.
- Stringent Quality Control: Rigorous testing ensures durability and safety.
- Advanced Manufacturing: Cutting-edge technology guarantees consistent quality and precise production.
- Flexible Production: Accommodates large-scale orders and customized batches.
- Reliable Quality Assurance: Thorough quality control from raw material inspection to final testing.
- On-Time Delivery: Fast turnaround times and shipping within 48 hours for most orders
Partner with a Trusted Industry Leader
- Reliability: Consistent quality and performance.
- Innovation: Innovative product development and marketing strategies.
- Expert Support: Tailored support for your unique business goals.
Welcome ODM/OEM customization
We offer full ODM/OEM services, allowing you to customize your products to meet specific market needs or branding requirements. Contact us to discuss your customization options.
Customer Reviews
Packing and Delivery
All products are e-commerce optimized with durable, cost-effective packaging to ensure safe delivery and easy logistics handling.
- Packaging: Secure, space-efficient, and eco-friendly materials.
- Shipping: Fast dispatch, with 48-hour shipping for most orders.




















