Hello, it is a tan pattern. There is room for flexibility. We recommend selecting a size by measuring the distance between your big toe and heel. Shoe sizes according to foot measurements are as follows; (9. 4 cm size 16), (10 cm size 17), (10. 7 cm, size 18), (11. 4 cm size 19), (12 cm size 20), (12. 7 cm 21 number), (13. 4 cm size 22), (14 cm size 23), (14. 7 cm, size 24), (15. 4 cm size 25), (16 cm size 26), (16. 7 cm, size 27), (17. 4 cm size 28), (18 cm size 29), (18. 7 cm, size 30), (19. 3 cm size 31), (20 cm size 32), (20. 7 cm, size 33), (21. 3 cm size 34), (22 cm size 35), (22. 7 cm, size 36), (23. 3 cm size 37), (24 cm size 38), (24. 7 cm 39 number), (25. 3 cm size 40), (26 cm size 41), (26. 7 cm, size 42), (27. 3 cm size 43), (28 cm size 44), (28. 7 cm, size 45), (29. 3 cm size 46), (30 cm size 47). Hi, We recommend choosing a size up by measuring the distance between the big toe and heel. The shoe numbers according to foot sizes are as follows; (9. 4 cm size 16), (10 cm size 17), (10. 7 cm size 18), (11. 4 cm size 19), (12 cm size 20), (12. 7 cm size 21), (13. 4 cm size 22), (14 cm size 23), (14. 7 cm size 24), (15. 4 cm size 25), (16 cm size 26), (16. 7 cm size 27), (17. 4 cm size 28), (18 cm size 29), (18. 7 Size 30 cm), (size 19. 3 cm size 31), (size 20 cm 32), (20. 7 cm size 33), (21. 3 cm size 34), (22 cm size 35), (22. 7 cm size 36), (23. 3 cm Size 37), (size 24 cm 38), (24. 7 cm size 39), (25. 3 cm size 40), (26 cm size 41), (26. 7 cm size 42), (27. 3 cm size 43), (28 cm size 44), (28. 7 cm size 45), (29. 3 cm size 46), (30 cm size 47).