‧ This fabric has passed the Intertek tear strength test and is better than the American ASTM D1424-09 test standard. ‧ Suitable for medium and high intensity exercise, no longer worry about the danger of pants tearing. ‧ The fabric is light and strong, giving you a zero resistance exercise experience! https://www.youtube.com/watch?v=42hO9ku-FiI https://live.staticflickr.com/65535/50700456078_1a6c475fd2_o.jpg | Ingredients | Polyester 95% / Spandex 5% | Model Information| Model height 178cm / weight 88kg This model wears size XL | Product Information| Taiwan design and development | Quality Assurance| GLADE. Products are sent to Intertek national notarization test, And it has passed the American AATCC test standards, please feel free to buy.