Customer Service?- If you are not satisfied with HPYGN resistance bands set, please feel free to contact us, we will fully refund. And we hope customers to give suggestions for improvement. Easy to Use & Carry?- The resistance band set comes with a storage bag, easy to carry anywhere, in travel, home, gym, etc. Simple & easy to use product for upper & lower body exercises that can be performed anywhere, is ideal for conditioning & rehabbing muscles. Different Level of Resistance?- The resistance bands for working out is divided into 3 different levels of resistance:Yellow band(Light, 0.35mm), Pink band(Medium, 0.45mm), Blue band(Heavy, 0.55mm).Never worry about the Physical Therapy Bands too hard, easily switch between the 3 levels to your preference anytime. Suitable for Many Exercises?- People Love it Because it is exercise bands are ideal for assisting in Sports Athletes, Seniors, Physical Therapy, Rehabilitation, Wrestling, Bodybuilding, Pilates, Yoga, Kickboxing, Crossfit and so on. Simple yet effective workouts will increase strength & improve motion. 2024 Upgrade Exercise Band?- Each Physical Therapy Bands measures 4.9 foot long X 6 Inch wide.A superior band product for resistance training and rehabilitation, provides both positive and negative force on muscles and joints, stretches tones and conditions all major muscle groups. Our bands are scent free and latex free without a sticky surface, is ideal for conditioning & rehabbing muscles.