Features: Long-Lasting Elasticity: Made from durable elastic material, these stretch bands retain strong rebound even after prolonged use, resisting sagging or deformation. Versatile Training Assistant: These long resistance bands are not only great for muscle strengthening but also assist with stretching, rehabilitation, and flexibility improvement. Their lightweight design combined with multiple applications makes them practical equipment for both home and gym workout Specifications: Material: plastic Color: black Size: from 5-15 lbs to 50-125 lbs Package includes: 20 x assistance bands Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays. Please use our sports equipment scientifically under safe conditions, and note that improper use may cause the risk of injury. Pregnant women please consider carefully before use 5 Resistance Levels: this resistance bands set includes 5 distinct resistance levels: 5-15 lbs, 15-35 lbs, 25-65 lbs, 53-85 lbs, 50-125 lbs; Whether you are a beginner or an experienced athlete, you can find the right intensity to effectively build muscle and improve flexibility with these exercise bands Safe Material: these exercise bands are crafted from elastic material, offering a soft, non-slip, and odor-free feel; They withstand strong stretching forces without tearing or wearing down; Even after long-term use, the bands maintain excellent elasticity for reliable during exercise Full-body Muscle Training: these stretch bands are ideal for targeting muscles like glutes, legs, shoulders, arms, and core, these resistance bands enhance overall body flexibility; Beyond strength training, they are also suitable for physical therapy, weight loss recovery, and speed training to help you achieve various fitness goals Suitable for All Fitness Levels: designed for both men and women, Whether new to fitness or an advanced enthusiast, these resistance bands allow easy adjustment of workout difficulty by choosing different levels, from gentle stretching to challenging strength exercises Lightweight and Portable: with a lightweight design, these gym bands are portable and can be used with a door anchor at home, the gym, the office, or while traveling; Their convenience ensures you never miss a workout, making them ideal companions for Pilates, yoga, and stretching routines