What do New Balance shoe numbers mean?

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Tags

1. #located
2. #tongue
3. #broken
4. #while
5. #naming
6. #style
7. #technology
8. #underside
9. #number
10. #system
11. #higher
12. #which
13. #parts
14. #lower
15. #styles
16. #model
17. #feature
18. #shoes
19. #numbered
20. #always