The cloth strap is thick on the inside and thin on the outside, fitting the upper

Made of high-quality AA-grade yarn, high-density stitching, double-needle reinforcement, flat and thick cloth tape, it takes up little space when it is sewn into the shoe, and there is no step when it is sewn to the upper, which fits the upper better

The flat pull strength is 1.5-2 times that of ordinary zippers (1200N for shoes, 1000N for ordinary)

Pull times

Smooth, resistant to pull, non-explosive chain, smooth opening and closing, and the load times are 5 times that of ordinary nylon zippers (3000 times for shoes, 500 times for ordinary zippers)