Bring new life, fun and excitement to your workouts with Kuyang Resistance Bands! 3x resistance band training bands : Red (1.5m /0.35mm / 8-10kg); Blue (1.8m / 0.45mm / 10-12kg); Yellow (2m / 0.55mm / 12-15kg) with a practical door anchor, which makes it easy to attach the straps to a door. Long-term use can relieve stress and fatigue, alter high-stress underbody health, promote blood circulation, lose weight, and even help to solve many problems..Whether you’re a beginner or an expert, these fitness bands are for you. The variety of resistances means you can adjust the intensity of your elastic bands workouts to suit your personal goals. Large exercise bands increases the number of possible exercises for the chest, back, shoulders, arms and legs and even larger people can exercise without restrictions..