Description: Thickness: 0.5,0.7,0.9,1.1mm Material: natural latex Color: red, green,blue,black Specifications: Length 50cm width 5cm perimeter Color Size Specifications Red 500mm, 50, 0.5mm 10 lb Blue 500mm, 50, 0.7mm 20 lb Green 500mm, 50, 0.9mm 30 lb Black 500mm, 50, 1.1mm 40 lb Features: To lose weight and increase muscle resistance training with resistance band training In doing stretching warm-up, you can use the resistance band complete Made of natural latex Improve muscle power and flexibility of physical activity