Synthetic Rubber sole Breathable Stretch Knit Upper: Provides the ultimate fit & complete comfort. Perfect Accord with Human Body Engineering, Finely stitched for lasting durability. Stretch Web Rubber Outsole: Provides the user with the enough buffer between feet and ground,improved mobility, increased traction, lightweight and elastic. Protect Ankle: Stretch soft lining expands with every move to keep Flexibility, can protects the feet from sharp, and reducing the risk of your ankles’ sprain. Fashion Design: arch support insole gives the midfoot the best support when you move. Perfect for walking, running, gym, athletic, travel ect. 100% Money Back Quarantee: If you have any quesisons before or after buying our product, please feel free contact us, we will handle it within 24 hours.