Material: Spring steel Size: 16 pounds Color: As shown 1. Made of high-quality environmentally friendly materials, it is elastic and one lasting. The 16L tension design is suitable for female users, effectively improving the back line and creating a beautiful body shape. 2. The unique eight-shaped design scientifically distributes the force points, effectively exercises the shoulder, back and arm muscle groups, and is an ideal choice for yoga, Pilates and daily fitness. 3. Suitable for a variety of scenarios, whether it is home exercise or outdoor sports, it can be easily carried, and the portable storage box design makes your fitness more convenient. 4. Professional-level resistance settings meet the training needs of different stages, gradually enhance muscle strength, promote blood circulation, and relieve shoulder and neck fatigue. 5. Intimate non-slip handle design, comfortable grip without hurting the hand, with detailed usage tutorials, even fitness novices can quickly get started, safely and efficiently achieve the desired effect. Package includes:1pcs Resistance band