A set of resistance bands includes 3 colors representing different tensile force. Each provides a workout level, suitable for a variety of sports purposes for women and men, like gym, yoga, training. Safe and Durable: Made of premium quality natural latex material, the resistance bands offer a smooth and bright appearance and provide superior durability, not easy to crack. Non-toxic and skin-friendly to the human body. Very easy and convenient to take everywhere, perfectly ideal for indoors and outdoors use with the instruction.