21-25 Inner Length: 13 13.5 14 14.5 15cm 26-30 Inner Length: 15.3 15.8 16.5 17.2 18cm Threads, small flaws, a few glue marks, edges not very smooth, a few bubbles issues, uneven soles does not affect wear. These are issues that buyers need to handle themsees as shoes are produced by labor-intensive enterprises and may not be as perfect as branded shoes. Please be aware that returns and exchanges are necessary and buyers must cover shipping costs. Special note: Color difference issues are unavoidable in shopping; we do not cover return shipping costs 21-30