Product specifications: Packing size: 15 13 2.5cm Black canvas bag: 17 13cm Green: 600 50 0.35 mm ---- 5 10lb Blue: 600 50 0.5 mm ------- 10 15lb Yellow: 600 50 0.7 mm ----- 15 20lb Red: 600 50 0.9 mm -------- 25 30lb Black: 600 50 1.1 mm ------ 30 40lb Tips: Cleaning: It can be washed directly, dried with a dry cloth, and placed in an unfolded state during drying to avoid sticking. Maintenance: When not in use for a long time, apply evenly with talcum powder and put it in a sealed bag. Storage: Store in a cool place and avoid sun exposure. Temperature: Do not approach the heat source (floor heating, fireplace, etc.) for a long time to prevent the latex from aging and affecting normal use.USER-FRIENDLY -- A manual is included to detail the training and procedures for each resistance band of different thicknesses (colors) to ensure that get effective training without overdoing it. Each resistance band is individually packaged in an OPP bag, which can effectively reduce the damage in the logistics process and make you rest assured to buy. EASY TO CARRY -- It can be used at home or outdoors. A 30-minute workout every day can improve muscle, physical activity and flexibility. Our resistance band can be used to help stretch when warming up. As an aid in yoga, make movements more standard and reduce the possibility of sports injuries. MULTI-PURPOSE -- Suitable for daily stretching, weight loss training and muscle training, such as lateral leg raise, lateral walk, hip bridge exercise, squat, monster step, coordination practice, etc. It is prefect for slimming, fitness bodybuilders, office workers, housewives, middle-aged and so on. 5 DIFFERENT RESISTANCE BANDS -- Its colorful combination makes exercise more fun and easier to reach training goals. Different thicknesses (resistance values) meet the different training requirements for resistance levels. It is a cost-effective fitness equipment for full body training, which can help achieve stronger, more stylish and sporty arms and legs, tightening the back and the hip line makes your body curve more elegant. NATURAL LATEX -- To ensure the elasticity and toughness of the bands: high rebound and anti-fracture, non-slip wear resistant, no deformation, strong recovery. In normal use, the stretching ratio can be up to 3 times the original length, which may stimulate the muscles most and exercise more effectively.